C312321323131323131232313231323133313132322331323221311331323331323122311   >>    C31232132313132313123231323132313331313232233132322131133132333132312231   <<    C312321323131323131232313231323133313132322331323221311331323331323122313   >>      C312321323131323131232313231323133313132322331323221311331323331323122312   >>