C121212123112323223313132322331323331323331322331313233313231323232211   >>    C12121212311232322331313232233132333132333132233131323331323132323221   <<    C121212123112323223313132322331323331323331322331313233313231323232213   >>      C121212123112323223313132322331323331323331322331313233313231323232212   >>