C2221232323213331311331333133313331323132313331333112123122132122333121   >>    C222123232321333131133133313331333132313231333133311212312213212233312   <<    C2221232323213331311331333133313331323132313331333112123122132122333123   >>      C2221232323213331311331333133313331323132313331333112123122132122333122   >>