apter pater atper taper ptaer tpaer apetr paetr aeptr eaptr peatr epatr atepr taepr aetpr eatpr teapr etapr ptear tpear petar eptar tepar etpar aptre patre atpre tapre ptare tpare aprte parte arpte rapte prate rpate atrpe tarpe artpe ratpe trape rtape ptrae tprae prtae rptae trpae rtpae apert paert aeprt eaprt peart epart apret paret arpet rapet praet rpaet aerpt earpt arept raept erapt reapt perat eprat preat rpeat erpat repat aterp taerp aetrp eatrp tearp etarp atrep tarep artep ratep traep rtaep aertp eartp aretp raetp eratp reatp terap etrap treap rteap ertap retap ptera tpera petra eptra tepra etpra ptrea tprea prtea rptea trpea rtpea perta eprta preta rpeta erpta repta terpa etrpa trepa rtepa ertpa retpa
Note: these 'words' (valid or invalid) are all the permutations of the word apter. These words are obtained by scrambling the letters in apter.