C222123232321333131133133313331323133313231322132313121122233211   >>    C22212323232133313113313331333132313331323132213231312112223321   <<    C222123232321333131133133313331323133313231322132313121122233213   >>      C222123232321333131133133313331323133313231322132313121122233212   >>