C111123313331323113313331333133313331323133113313331311211312321   >>    C11112331333132311331333133313331333132313311331333131121131232   <<    C111123313331323113313331333133313331323133113313331311211312323   >>      C111123313331323113313331333133313331323133113313331311211312322   >>