Unblocking Wrench Puzzle

The puzzle pieces in Unblocking Wrench Puzzle are colorful wrenches, each attached to a different nut. Your task is to give a command to each key to unscrew the nut. At the same time, he should not be disturbed by nearby keys, because he needs to make at least one full revolution around the nut. It is necessary to remove all wrenches and nuts from the field and thus you can move to a new level, where there will be more elements and the task will become more difficult than the previous one in Unblocking Wrench Puzzle.