diff --git a/questions/869-extreme-distributeunions/test-cases.ts b/questions/869-extreme-distributeunions/test-cases.ts
index 957f71cb..eb069052 100644
--- a/questions/869-extreme-distributeunions/test-cases.ts
+++ b/questions/869-extreme-distributeunions/test-cases.ts
@@ -4,129 +4,79 @@ type cases = [
     // Already distributed unions should stay the same:
     Expect<Equal<DistributeUnions<1>, 1>>,
     Expect<Equal<DistributeUnions<string>, string>>,
-    Expect<Equal<UnionToTuple<DistributeUnions<1 | 2>>, [1, 2]>>,
-    Expect<
-      Equal<
-        UnionToTuple<DistributeUnions<'b' | { type: 'a' } | [1]>>,
-        ['b', { type: 'a' }, [1]]
-      >
-    >,
+    Expect<Equal<DistributeUnions<1 | 2>, 1 | 2>>,
+    Expect<Equal<DistributeUnions<'b' | { type: 'a' } | [1]>, 'b' | { type: 'a' } | [1]>>,
     // tuples:
-    Expect<Equal<UnionToTuple<DistributeUnions<[1 | 2, 3]>>, [[1, 3], [2, 3]]>>,
+    Expect<Equal<DistributeUnions<[1 | 2, 3]>, [1, 3] | [2, 3]>>,
+    Expect<Equal<DistributeUnions<[1 | 2, 'a' | 'b']>, [1, 'a'] | [1, 'b'] | [2, 'a'] | [2, 'b']>>,
     Expect<
-      Equal<
-        UnionToTuple<DistributeUnions<[1 | 2, 'a' | 'b']>>,
-        [[1, 'a'], [1, 'b'], [2, 'a'], [2, 'b']]
-      >
-    >,
-    Expect<
-      Equal<
-        UnionToTuple<DistributeUnions<[1 | 2, 'a' | 'b', false | true]>>,
-        [
-          [1, 'a', false],
-          [1, 'a', true],
-          [1, 'b', false],
-          [1, 'b', true],
-          [2, 'a', false],
-          [2, 'a', true],
-          [2, 'b', false],
-          [2, 'b', true]
-        ]
-      >
+        Equal<
+            DistributeUnions<[1 | 2, 'a' | 'b', false | true]>,
+            | [1, 'a', false]
+            | [1, 'a', true]
+            | [1, 'b', false]
+            | [1, 'b', true]
+            | [2, 'a', false]
+            | [2, 'a', true]
+            | [2, 'b', false]
+            | [2, 'b', true]
+        >
     >,
     // objects
     Expect<
-      Equal<
-        UnionToTuple<DistributeUnions<{ x: 'a' | 'b'; y: 'c' | 'd' }>>,
-        [
-          { x: 'a'; y: 'c' },
-          { x: 'a'; y: 'd' },
-          { x: 'b'; y: 'c' },
-          { x: 'b'; y: 'd' }
-        ]
-      >
+        Equal<
+            DistributeUnions<{ x: 'a' | 'b'; y: 'c' | 'd' }>,
+            { x: 'a'; y: 'c' } | { x: 'a'; y: 'd' } | { x: 'b'; y: 'c' } | { x: 'b'; y: 'd' }
+        >
     >,
     Expect<
-      Equal<
-        UnionToTuple<
-          DistributeUnions<
-            { type: 'a'; value: number | string } | { type: 'b'; value: boolean }
-          >
-        >,
-        [
-          { type: 'a'; value: string },
-          { type: 'a'; value: number },
-          { type: 'b'; value: false },
-          { type: 'b'; value: true }
-        ]
-      >
+        Equal<
+            DistributeUnions<{ type: 'a'; value: number | string } | { type: 'b'; value: boolean }>,
+            | { type: 'a'; value: string }
+            | { type: 'a'; value: number }
+            | { type: 'b'; value: false }
+            | { type: 'b'; value: true }
+        >
     >,
     Expect<
-      Equal<
-        UnionToTuple<
-          DistributeUnions<
-            | {
-                type: 'a';
-                option: { kind: 'none' } | { kind: 'some'; value: 'x' | 'y' };
-              }
+        Equal<
+            DistributeUnions<
+                | {
+                      type: 'a';
+                      option: { kind: 'none' } | { kind: 'some'; value: 'x' | 'y' };
+                  }
+                | { type: 'b'; msg: string }
+            >,
             | { type: 'b'; msg: string }
-          >
-        >,
-        [
-          { type: 'b'; msg: string },
-          { type: 'a'; option: { kind: 'none' } },
-          { type: 'a'; option: { kind: 'some'; value: 'x' } },
-          { type: 'a'; option: { kind: 'some'; value: 'y' } }
-        ]
-      >
+            | { type: 'a'; option: { kind: 'none' } }
+            | { type: 'a'; option: { kind: 'some'; value: 'x' } }
+            | { type: 'a'; option: { kind: 'some'; value: 'y' } }
+        >
     >,
     // mixed structures:
     Expect<
-      Equal<
-        UnionToTuple<
-          DistributeUnions<
-            [false | true, { value: 'a' | 'b' }, { x: { y: 2 | 3 } }]
-          >
-        >,
-        [
-          [false, { value: 'a' }, { x: { y: 2 } }],
-          [false, { value: 'a' }, { x: { y: 3 } }],
-          [false, { value: 'b' }, { x: { y: 2 } }],
-          [false, { value: 'b' }, { x: { y: 3 } }],
-          [true, { value: 'a' }, { x: { y: 2 } }],
-          [true, { value: 'a' }, { x: { y: 3 } }],
-          [true, { value: 'b' }, { x: { y: 2 } }],
-          [true, { value: 'b' }, { x: { y: 3 } }]
-        ]
-      >
+        Equal<
+            DistributeUnions<[false | true, { value: 'a' | 'b' }, { x: { y: 2 | 3 } }]>,
+            | [false, { value: 'a' }, { x: { y: 2 } }]
+            | [false, { value: 'a' }, { x: { y: 3 } }]
+            | [false, { value: 'b' }, { x: { y: 2 } }]
+            | [false, { value: 'b' }, { x: { y: 3 } }]
+            | [true, { value: 'a' }, { x: { y: 2 } }]
+            | [true, { value: 'a' }, { x: { y: 3 } }]
+            | [true, { value: 'b' }, { x: { y: 2 } }]
+            | [true, { value: 'b' }, { x: { y: 3 } }]
+        >
     >,
     Expect<
-      Equal<
-        UnionToTuple<
-          DistributeUnions<17 | [10 | { value: 'a' | 'b' }, { x: { y: 2 | 3 } }]>
-        >,
-        [
-          17,
-          [10, { x: { y: 2 } }],
-          [10, { x: { y: 3 } }],
-          [{ value: 'a' }, { x: { y: 2 } }],
-          [{ value: 'a' }, { x: { y: 3 } }],
-          [{ value: 'b' }, { x: { y: 2 } }],
-          [{ value: 'b' }, { x: { y: 3 } }]
-        ]
-      >
-    >
-  ];
-  
-
-type UnionToIntersection<U> = (
-    U extends any ? (k: U) => void : never
-  ) extends (k: infer I) => void
-    ? I
-    : never
-
-type UnionToTuple<T> = UnionToIntersection<
-  T extends any ? (t: T) => T : never
-> extends (_: any) => infer W
-  ? [...UnionToTuple<Exclude<T, W>>, W]
-  : [];
+        Equal<
+            DistributeUnions<17 | [10 | { value: 'a' | 'b' }, { x: { y: 2 | 3 } }]>,
+            | 17
+            | [10, { x: { y: 2 } }]
+            | [10, { x: { y: 3 } }]
+            | [{ value: 'a' }, { x: { y: 2 } }]
+            | [{ value: 'a' }, { x: { y: 3 } }]
+            | [{ value: 'b' }, { x: { y: 2 } }]
+            | [{ value: 'b' }, { x: { y: 3 } }]
+        >
+    >,
+];