C31232233133313221211113313331333131211113313231333131122213121   >>    C3123223313331322121111331333133313121111331323133313112221312   <<    C31232233133313221211113313331333131211113313231333131122213123   >>      C31232233133313221211113313331333131211113313231333131122213122   >>