C222123232321333131133133313331323133313231323231312323223321221   >>    C22212323232133313113313331333132313331323132323131232322332122   <<    C222123232321333131133133313331323133313231323231312323223321223   >>      C222123232321333131133133313331323133313231323231312323223321222   >>