C1111121111331311211331333133313331333133313231333133313311211111322233121   >>    C111112111133131121133133313331333133313331323133313331331121111132223312   <<    C1111121111331311211331333133313331333133313231333133313311211111322233123   >>      C1111121111331311211331333133313331333133313231333133313311211111322233122   >>