C111123313331323113313331333133313331323112133313331333121311211   >>    C11112331333132311331333133313331333132311213331333133312131121   <<    C111123313331323113313331333133313331323112133313331333121311213   >>      C111123313331323113313331333133313331323112133313331333121311212   >>