C312321323131323131232313231323133313132322331323221311331323331323123221   >>    C31232132313132313123231323132313331313232233132322131133132333132312322   <<    C312321323131323131232313231323133313132322331323221311331323331323123223   >>      C312321323131323131232313231323133313132322331323221311331323331323123222   >>