C22212323232133313113313331333132313331323133313331213132321331   >>    C2221232323213331311331333133313231333132313331333121313232133   <<    C22212323232133313113313331333132313331323133313331213132321333   >>      C22212323232133313113313331333132313331323133313331213132321332   >>