C1111133313331323223313331333133313113313133112111133131133221211   >>    C111113331333132322331333133313331311331313311211113313113322121   <<    C1111133313331323223313331333133313113313133112111133131133221213   >>      C1111133313331323223313331333133313113313133112111133131133221212   >>