C22212323232133313113313331333132313231333132313222133222332221   >>    C2221232323213331311331333133313231323133313231322213322233222   <<    C22212323232133313113313331333132313231333132313222133222332223   >>      C22212323232133313113313331333132313231333132313222133222332222   >>