C1111121111331311211331333133313331333133313231333133313331333132223231123311   >>    C111112111133131121133133313331333133313331323133313331333133313222323112331   <<    C1111121111331311211331333133313331333133313231333133313331333132223231123313   >>      C1111121111331311211331333133313331333133313231333133313331333132223231123312   >>