C1111121111331311211331333133313331333133313231333133313331333133213112121   >>    C111112111133131121133133313331333133313331323133313331333133313321311212   <<    C1111121111331311211331333133313331333133313231333133313331333133213112123   >>      C1111121111331311211331333133313331333133313231333133313331333133213112122   >>