C222123232321333131133133313331323133313231322132313121313221321   >>    C22212323232133313113313331333132313331323132213231312131322132   <<    C222123232321333131133133313331323133313231322132313121313221323   >>      C222123232321333131133133313331323133313231322132313121313221322   >>