C222123232321333131133133313331333132313231322221231212133112121   >>    C22212323232133313113313331333133313231323132222123121213311212   <<    C222123232321333131133133313331333132313231322221231212133112123   >>      C222123232321333131133133313331333132313231322221231212133112122   >>