C1111233131211111211113313331333133313331333133313331333133313221211233231   >>    C111123313121111121111331333133313331333133313331333133313331322121123323   <<    C1111233131211111211113313331333133313331333133313331333133313221211233233   >>      C1111233131211111211113313331333133313331333133313331333133313221211233232   >>