C111123313331323113313331323133313331311331311331311221123232233133312111   >>    C11112331333132311331333132313331333131133131133131122112323223313331211   <<    C111123313331323113313331323133313331311331311331311221123232233133312113   >>      C111123313331323113313331323133313331311331311331311221123232233133312112   >>