C111123313331323113313331323133313331311331311331323133313231232321111   >>    C11112331333132311331333132313331333131133131133132313331323123232111   <<    C111123313331323113313331323133313331311331311331323133313231232321113   >>      C111123313331323113313331323133313331311331311331323133313231232321112   >>