C1111133313331323223313331333133313113313133112111113331323323311   >>    C111113331333132322331333133313331311331313311211111333132332331   <<    C1111133313331323223313331333133313113313133112111113331323323313   >>      C1111133313331323223313331333133313113313133112111113331323323312   >>