|-PROGN2
   |-IF_FOOD_AHEAD
      |-IF_FOOD_AHEAD
         |-RIGHT
         |-RIGHT
      |-PROGN3
         |-RIGHT
         |-MOVE
         |-RIGHT
   |-IF_FOOD_AHEAD
      |-IF_FOOD_AHEAD
         |-PROGN2
            |-MOVE
            |-LEFT
         |-MOVE
      |-PROGN2
         |-RIGHT
         |-RIGHT