C1111121111331311211331333133313331323131133133313112223313221323311   >>    C111112111133131121133133313331333132313113313331311222331322132331   <<    C1111121111331311211331333133313331323131133133313112223313221323313   >>      C1111121111331311211331333133313331323131133133313112223313221323312   >>