C1111233131211111211113313331333133313232212111133132233213312131   >>    C111123313121111121111331333133313331323221211113313223321331213   <<    C1111233131211111211113313331333133313232212111133132233213312133   >>      C1111233131211111211113313331333133313232212111133132233213312132   >>