C1111233131211111211113313331333133313331333133313331331121111331311313221   >>    C111123313121111121111331333133313331333133313331333133112111133131131322   <<    C1111233131211111211113313331333133313331333133313331331121111331311313223   >>      C1111233131211111211113313331333133313331333133313331331121111331311313222   >>