C3121113331311331313233313231331123132313232233132313331122112311311   >>    C312111333131133131323331323133112313231323223313231333112211231131   <<    C3121113331311331313233313231331123132313232233132313331122112311313   >>      C3121113331311331313233313231331123132313232233132313331122112311312   >>