C22212323232133313113313331333132313231333132313222131121222221   >>    C2221232323213331311331333133313231323133313231322213112122222   <<    C22212323232133313113313331333132313231333132313222131121222223   >>      C22212323232133313113313331333132313231333132313222131121222222   >>