C12121212311232322331313232233132313331323331323223313232122311   >>    C1212121231123232233131323223313231333132333132322331323212231   <<    C12121212311232322331313232233132313331323331323223313232122313   >>      C12121212311232322331313232233132313331323331323223313232122312   >>