C22212323232133313113313331333132313231333132313222131131321231   >>    C2221232323213331311331333133313231323133313231322213113132123   <<    C22212323232133313113313331333132313231333132313222131131321233   >>      C22212323232133313113313331333132313231333132313222131131321232   >>