C2221232323213331311331333133313331323132313222212312122123222321   >>    C222123232321333131133133313331333132313231322221231212212322232   <<    C2221232323213331311331333133313331323132313222212312122123222323   >>      C2221232323213331311331333133313331323132313222212312122123222322   >>