C22212323232133313113313331333132313231333132313222131122331211   >>    C2221232323213331311331333133313231323133313231322213112233121   <<    C22212323232133313113313331333132313231333132313222131122331213   >>      C22212323232133313113313331333132313231333132313222131122331212   >>