C313131323331311331322331322331311211331323331313331323131232313232211   >>    C31313132333131133132233132233131121133132333131333132313123231323221   <<    C313131323331311331322331322331311211331323331313331323131232313232213   >>      C313131323331311331322331322331311211331323331313331323131232313232212   >>