C22212323232133313113313331333132313331323331123233121112332311   >>    C2221232323213331311331333133313231333132333112323312111233231   <<    C22212323232133313113313331333132313331323331123233121112332313   >>      C22212323232133313113313331333132313331323331123233121112332312   >>