C121212123112323223313132322331323133313232213331323223313232212321   >>    C12121212311232322331313232233132313331323221333132322331323221232   <<    C121212123112323223313132322331323133313232213331323223313232212323   >>      C121212123112323223313132322331323133313232213331323223313232212322   >>