C1111133313331323223313331333133313311211111211331333131211111323323311   >>    C111113331333132322331333133313331331121111121133133313121111132332331   <<    C1111133313331323223313331333133313311211111211331333131211111323323313   >>      C1111133313331323223313331333133313311211111211331333131211111323323312   >>