C2221232323213331311331333133313231333132313331333233113222323112311   >>    C222123232321333131133133313331323133313231333133323311322232311231   <<    C2221232323213331311331333133313231333132313331333233113222323112313   >>      C2221232323213331311331333133313231333132313331333233113222323112312   >>