brogh rbogh borgh obrgh robgh orbgh brgoh rbgoh bgroh gbroh rgboh grboh bogrh obgrh bgorh gborh ogbrh gobrh rogbh orgbh rgobh grobh ogrbh gorbh brohg rbohg borhg obrhg robhg orbhg brhog rbhog bhrog hbrog rhbog hrbog bohrg obhrg bhorg hborg ohbrg hobrg rohbg orhbg rhobg hrobg ohrbg horbg brgho rbgho bgrho gbrho rgbho grbho brhgo rbhgo bhrgo hbrgo rhbgo hrbgo bghro gbhro bhgro hbgro ghbro hgbro rghbo grhbo rhgbo hrgbo ghrbo hgrbo boghr obghr bgohr gbohr ogbhr gobhr bohgr obhgr bhogr hbogr ohbgr hobgr bghor gbhor bhgor hbgor ghbor hgbor oghbr gohbr ohgbr hogbr ghobr hgobr roghb orghb rgohb grohb ogrhb gorhb rohgb orhgb rhogb hrogb ohrgb horgb rghob grhob rhgob hrgob ghrob hgrob oghrb gohrb ohgrb hogrb ghorb hgorb
Note: these 'words' (valid or invalid) are all the permutations of the word brogh. These words are obtained by scrambling the letters in brogh.