C22212323232133313113313331333132313331323132213231312121212321   >>    C2221232323213331311331333133313231333132313221323131212121232   <<    C22212323232133313113313331333132313331323132213231312121212323   >>      C22212323232133313113313331333132313331323132213231312121212322   >>