after fater atfer tafer ftaer tfaer afetr faetr aeftr eaftr featr efatr atefr taefr aetfr eatfr teafr etafr ftear tfear fetar eftar tefar etfar aftre fatre atfre tafre ftare tfare afrte farte arfte rafte frate rfate atrfe tarfe artfe ratfe trafe rtafe ftrae tfrae frtae rftae trfae rtfae afert faert aefrt eafrt feart efart afret faret arfet rafet fraet rfaet aerft earft areft raeft eraft reaft ferat efrat freat rfeat erfat refat aterf taerf aetrf eatrf tearf etarf atref taref artef ratef traef rtaef aertf eartf aretf raetf eratf reatf teraf etraf treaf rteaf ertaf retaf ftera tfera fetra eftra tefra etfra ftrea tfrea frtea rftea trfea rtfea ferta efrta freta rfeta erfta refta terfa etrfa trefa rtefa ertfa retfa
Note: these 'words' (valid or invalid) are all the permutations of the word after. These words are obtained by scrambling the letters in after.