+opt :: (Action a b) -> Action a b
+opt (WhileContainerBelow b a) = WhileContainerBelow b (opt a)
+opt (Wait bm :. b) = opt (bm.f2 b)
+opt (a :. Wait bm) = opt (bm.t2 a)
+opt (a :. b) = opt a :. opt b
+opt x = x
+
+Start = opt (moveToShip :. wait :. moveDown)