C22212323232133313113313331333132313331323221121212331323332211   >>    C2221232323213331311331333133313231333132322112121233132333221   <<    C22212323232133313113313331333132313331323221121212331323332213   >>      C22212323232133313113313331333132313331323221121212331323332212   >>