C111123313331323113313331333133313331323133113313331311211212121   >>    C11112331333132311331333133313331333132313311331333131121121212   <<    C111123313331323113313331333133313331323133113313331311211212123   >>      C111123313331323113313331333133313331323133113313331311211212122   >>