C2221232323213331311331333133313231333132313331333233113222213332112321   >>    C222123232321333131133133313331323133313231333133323311322221333211232   <<    C2221232323213331311331333133313231333132313331333233113222213332112323   >>      C2221232323213331311331333133313231333132313331333233113222213332112322   >>