C222123232321333131133133313331323133313231322132313121122221221   >>    C22212323232133313113313331333132313331323132213231312112222122   <<    C222123232321333131133133313331323133313231322132313121122221223   >>      C222123232321333131133133313331323133313231322132313121122221222   >>