C1212121231123232233131323223313233313231313331311331323331323223311   >>    C121212123112323223313132322331323331323131333131133132333132322331   <<    C1212121231123232233131323223313233313231313331311331323331323223313   >>      C1212121231123232233131323223313233313231313331311331323331323223312   >>