thraw htraw trhaw rthaw hrtaw rhtaw tharw htarw tahrw athrw hatrw ahtrw trahw rtahw tarhw atrhw rathw arthw hratw rhatw hartw ahrtw rahtw arhtw thrwa htrwa trhwa rthwa hrtwa rhtwa thwra htwra twhra wthra hwtra whtra trwha rtwha twrha wtrha rwtha wrtha hrwta rhwta hwrta whrta rwhta wrhta thawr htawr tahwr athwr hatwr ahtwr thwar htwar twhar wthar hwtar whtar tawhr atwhr twahr wtahr awthr wathr hawtr ahwtr hwatr whatr awhtr wahtr trawh rtawh tarwh atrwh ratwh artwh trwah rtwah twrah wtrah rwtah wrtah tawrh atwrh twarh wtarh awtrh watrh rawth arwth rwath wrath awrth warth hrawt rhawt harwt ahrwt rahwt arhwt hrwat rhwat hwrat whrat rwhat wrhat hawrt ahwrt hwart whart awhrt wahrt rawht arwht rwaht wraht awrht warht
Note: these 'words' (valid or invalid) are all the permutations of the word thraw. These words are obtained by scrambling the letters in thraw.