C222123232321333131133133313331323133313231322132313121212223311   >>    C22212323232133313113313331333132313331323132213231312121222331   <<    C222123232321333131133133313331323133313231322132313121212223313   >>      C222123232321333131133133313331323133313231322132313121212223312   >>