(pick ball2 rooma right)
(pick ball4 rooma left)
(move rooma roomb)
(drop ball2 roomb right)
(drop ball4 roomb left)
(move roomb rooma)
(pick ball1 rooma right)
(pick ball3 rooma left)
(move rooma roomb)
(drop ball1 roomb right)
(drop ball3 roomb left)
; cost = 11 (unit cost)
