C312321323131323131232313231323133313132322331323221311331323321   >>    C31232132313132313123231323132313331313232233132322131133132332   <<    C312321323131323131232313231323133313132322331323221311331323323   >>      C312321323131323131232313231323133313132322331323221311331323322   >>