tabid atbid tbaid btaid abtid batid taibd atibd tiabd itabd aitbd iatbd tbiad btiad tibad itbad bitad ibtad abitd baitd aibtd iabtd biatd ibatd tabdi atbdi tbadi btadi abtdi batdi tadbi atdbi tdabi dtabi adtbi datbi tbdai btdai tdbai dtbai bdtai dbtai abdti badti adbti dabti bdati dbati taidb atidb tiadb itadb aitdb iatdb tadib atdib tdaib dtaib adtib datib tidab itdab tdiab dtiab idtab ditab aidtb iadtb aditb daitb idatb diatb tbida btida tibda itbda bitda ibtda tbdia btdia tdbia dtbia bdtia dbtia tidba itdba tdiba dtiba idtba ditba bidta ibdta bdita dbita idbta dibta abidt baidt aibdt iabdt biadt ibadt abdit badit adbit dabit bdait dbait aidbt iadbt adibt daibt idabt diabt bidat ibdat bdiat dbiat idbat dibat
Note: these 'words' (valid or invalid) are all the permutations of the word tabid. These words are obtained by scrambling the letters in tabid.