C121212123112323223313132322331323132333132322231323132313311221   >>    C12121212311232322331313232233132313233313232223132313231331122   <<    C121212123112323223313132322331323132333132322231323132313311223   >>      C121212123112323223313132322331323132333132322231323132313311222   >>