C22212323232133313113313331333132313331323132322221212233113331   >>    C2221232323213331311331333133313231333132313232222121223311333   <<    C22212323232133313113313331333132313331323132322221212233113333   >>      C22212323232133313113313331333132313331323132322221212233113332   >>