C222123232321333131133133313331323133313231322132313121212112232121   >>    C22212323232133313113313331333132313331323132213231312121211223212   <<    C222123232321333131133133313331323133313231322132313121212112232123   >>      C222123232321333131133133313331323133313231322132313121212112232122   >>