Vote on the next frame inputs in the comments below, using any of the provided keys with a space between them. Note, if you're discussing things instead of voting put a '?' at the start of your comment.
nil->, A->A, B->B, UP->Up, LEFT->Left, DOWN->Down, RIGHT->Right, START->Start, SELECT->Select, Up->Up, Left->Left, Down->Down, Right->Right, Start->Start, Select->Select, a->A, b->B, up->Up, left->Left, down->Down, right->Right, start->Start, select->Select, 🅰->A, 🅱->B, ⬆️->Up, ⬅️->Left, ⬇->Down, ➡->Right, ▶->Start, ◀->Select