C31232233133313221211113313331333133313112223313231333132313211221   >>    C3123223313331322121111331333133313331311222331323133313231321122   <<    C31232233133313221211113313331333133313112223313231333132313211223   >>      C31232233133313221211113313331333133313112223313231333132313211222   >>