fetas eftas fteas tfeas etfas tefas feats efats faets afets eafts aefts ftaes tfaes fates aftes tafes atfes etafs teafs eatfs aetfs taefs atefs fetsa eftsa ftesa tfesa etfsa tefsa festa efsta fseta sfeta esfta sefta ftsea tfsea fstea sftea tsfea stfea etsfa tesfa estfa setfa tsefa stefa feast efast faest afest eafst aefst fesat efsat fseat sfeat esfat sefat faset afset fsaet sfaet asfet safet easft aesft esaft seaft aseft saeft ftase tfase fatse aftse tafse atfse ftsae tfsae fstae sftae tsfae stfae faste afste fsate sfate asfte safte tasfe atsfe tsafe stafe astfe satfe etasf teasf eatsf aetsf taesf atesf etsaf tesaf estaf setaf tseaf steaf eastf aestf esatf seatf asetf saetf tasef atsef tsaef staef astef satef
Note: these 'words' (valid or invalid) are all the permutations of the word fetas. These words are obtained by scrambling the letters in fetas.