pilth iplth plith lpith ilpth lipth pitlh iptlh ptilh tpilh itplh tiplh pltih lptih ptlih tplih ltpih tlpih iltph litph itlph tilph ltiph tliph pilht iplht pliht lpiht ilpht lipht pihlt iphlt philt hpilt ihplt hiplt plhit lphit phlit hplit lhpit hlpit ilhpt lihpt ihlpt hilpt lhipt hlipt pithl ipthl ptihl tpihl itphl tiphl pihtl iphtl phitl hpitl ihptl hiptl pthil tphil phtil hptil thpil htpil ithpl tihpl ihtpl hitpl thipl htipl plthi lpthi ptlhi tplhi ltphi tlphi plhti lphti phlti hplti lhpti hlpti pthli tphli phtli hptli thpli htpli lthpi tlhpi lhtpi hltpi thlpi htlpi ilthp lithp itlhp tilhp ltihp tlihp ilhtp lihtp ihltp hiltp lhitp hlitp ithlp tihlp ihtlp hitlp thilp htilp lthip tlhip lhtip hltip thlip htlip
Note: these 'words' (valid or invalid) are all the permutations of the word pilth. These words are obtained by scrambling the letters in pilth.