C1111121111331311211331333133313331333133313231333133313331311332211331   >>    C111112111133131121133133313331333133313331323133313331333131133221133   <<    C1111121111331311211331333133313331333133313231333133313331311332211333   >>      C1111121111331311211331333133313331333133313231333133313331311332211332   >>