C111123313331323113313331323133313331311331311331333133322232211   >>    C11112331333132311331333132313331333131133131133133313332223221   <<    C111123313331323113313331323133313331311331311331333133322232213   >>      C111123313331323113313331323133313331311331311331333133322232212   >>