C2221232323213331311331333133313231333132313331333121313233221132221   >>    C222123232321333131133133313331323133313231333133312131323322113222   <<    C2221232323213331311331333133313231333132313331333121313233221132223   >>      C2221232323213331311331333133313231333132313331333121313233221132222   >>