C31232233133313221211113313331333133313112223313231333132322121221   >>    C3123223313331322121111331333133313331311222331323133313232212122   <<    C31232233133313221211113313331333133313112223313231333132322121223   >>      C31232233133313221211113313331333133313112223313231333132322121222   >>