C121212123112323223313132322331323331323331322331313233313231333131231   >>    C12121212311232322331313232233132333132333132233131323331323133313123   <<    C121212123112323223313132322331323331323331322331313233313231333131233   >>      C121212123112323223313132322331323331323331322331313233313231333131232   >>