C222123232321333131133133313331323133313231322132313121222221121   >>    C22212323232133313113313331333132313331323132213231312122222112   <<    C222123232321333131133133313331323133313231322132313121222221123   >>      C222123232321333131133133313331323133313231322132313121222221122   >>