C12121212311232322331313232233132313331323221133132313233313233313113311   >>    C1212121231123232233131323223313231333132322113313231323331323331311331   <<    C12121212311232322331313232233132313331323221133132313233313233313113313   >>      C12121212311232322331313232233132313331323221133132313233313233313113312   >>