khaph hkaph kahph akhph hakph ahkph khpah hkpah kphah pkhah hpkah phkah kaphh akphh kpahh pkahh apkhh pakhh hapkh ahpkh hpakh phakh aphkh pahkh khahp hkahp kahhp akhhp hakhp ahkhp khhap hkhap khhap hkhap hhkap hhkap kahhp akhhp khahp hkahp ahkhp hakhp hahkp ahhkp hhakp hhakp ahhkp hahkp khpha hkpha kphha pkhha hpkha phkha khhpa hkhpa khhpa hkhpa hhkpa hhkpa kphha pkhha khpha hkpha phkha hpkha hphka phhka hhpka hhpka phhka hphka kaphh akphh kpahh pkahh apkhh pakhh kahph akhph khaph hkaph ahkph hakph kphah pkhah khpah hkpah phkah hpkah aphkh pahkh ahpkh hapkh phakh hpakh haphk ahphk hpahk phahk aphhk pahhk hahpk ahhpk hhapk hhapk ahhpk hahpk hphak phhak hhpak hhpak phhak hphak aphhk pahhk ahphk haphk phahk hpahk
Note: these 'words' (valid or invalid) are all the permutations of the word khaph. These words are obtained by scrambling the letters in khaph.