I don't know basic for the 83, but you want to make a loop. Preferable, try
to use repeat or while loop around the body. Then, have one part to move the
men, followed by a part to make the piece fall.
Create Sreen
Start Loop
Get Input.
Clear Objects, in old locations
Move Man
Move Pieces
Draw New Objects, in new locations.
Slight Pause to make it easier to see
End Loop