C1111121111331311211331333133313331333133313231333133313331311331323112121121   >>    C111112111133131121133133313331333133313331323133313331333131133132311212112   <<    C1111121111331311211331333133313331333133313231333133313331311331323112121123   >>      C1111121111331311211331333133313331333133313231333133313331311331323112121122   >>