C2221232323213331311331333133313231333132313331333121313233132332121121   >>    C222123232321333131133133313331323133313231333133312131323313233212112   <<    C2221232323213331311331333133313231333132313331333121313233132332121123   >>      C2221232323213331311331333133313231333132313331333121313233132332121122   >>