C22212323232133313113313331333132313331323133313331213132331231223311   >>    C2221232323213331311331333133313231333132313331333121313233123122331   <<    C22212323232133313113313331333132313331323133313331213132331231223313   >>      C22212323232133313113313331333132313331323133313331213132331231223312   >>