C121212123112323223313132322331323133313232213331313231323131231221   >>    C12121212311232322331313232233132313331323221333131323132313123122   <<    C121212123112323223313132322331323133313232213331313231323131231223   >>      C121212123112323223313132322331323133313232213331313231323131231222   >>