C2221232323213331311331333133313231333132313331333233113222333123231   >>    C222123232321333131133133313331323133313231333133323311322233312323   <<    C2221232323213331311331333133313231333132313331333233113222333123233   >>      C2221232323213331311331333133313231333132313331333233113222333123232   >>