unhat nuhat uhnat hunat nhuat hnuat unaht nuaht uanht aunht nauht anuht uhant huant uahnt auhnt haunt ahunt nhaut hnaut nahut anhut hanut ahnut unhta nuhta uhnta hunta nhuta hnuta untha nutha utnha tunha ntuha tnuha uhtna hutna uthna tuhna htuna thuna nhtua hntua nthua tnhua htnua thnua unath nuath uanth aunth nauth anuth untah nutah utnah tunah ntuah tnuah uatnh autnh utanh tuanh atunh taunh natuh antuh ntauh tnauh atnuh tanuh uhatn huatn uahtn auhtn hautn ahutn uhtan hutan uthan tuhan htuan thuan uathn authn utahn tuahn atuhn tauhn hatun ahtun htaun thaun athun tahun nhatu hnatu nahtu anhtu hantu ahntu nhtau hntau nthau tnhau htnau thnau nathu anthu ntahu tnahu atnhu tanhu hatnu ahtnu htanu thanu athnu tahnu
Note: these 'words' (valid or invalid) are all the permutations of the word unhat. These words are obtained by scrambling the letters in unhat.