spear psear separ espar pesar epsar spaer psaer saper asper paser apser seapr esapr saepr asepr easpr aespr peasr epasr paesr apesr eapsr aepsr spera psera sepra espra pesra epsra sprea psrea srpea rspea prsea rpsea serpa esrpa srepa rsepa erspa respa persa eprsa presa rpesa erpsa repsa spare psare sapre aspre pasre apsre sprae psrae srpae rspae prsae rpsae sarpe asrpe srape rsape arspe raspe parse aprse prase rpase arpse rapse searp esarp saerp aserp easrp aesrp serap esrap sreap rseap ersap resap sarep asrep sraep rsaep arsep rasep earsp aersp erasp reasp aresp raesp pears epars paers apers eaprs aeprs peras epras preas rpeas erpas repas pares apres praes rpaes arpes rapes earps aerps eraps reaps areps raeps
Note: these 'words' (valid or invalid) are all the permutations of the word spear. These words are obtained by scrambling the letters in spear.