C111123313331323113313331333133313331323112133313331333132322133313211   >>    C11112331333132311331333133313331333132311213331333133313232213331321   <<    C111123313331323113313331333133313331323112133313331333132322133313213   >>      C111123313331323113313331333133313331323112133313331333132322133313212   >>