C222123232321333131133133313331323133313231322132313121311211222121   >>    C22212323232133313113313331333132313331323132213231312131121122212   <<    C222123232321333131133133313331323133313231322132313121311211222123   >>      C222123232321333131133133313331323133313231322132313121311211222122   >>