C1111133313331323223313331333133313331333232233133112111112111111212311   >>    C111113331333132322331333133313331333133323223313311211111211111121231   <<    C1111133313331323223313331333133313331333232233133112111112111111212313   >>      C1111133313331323223313331333133313331333232233133112111112111111212312   >>