yawps aywps ywaps wyaps awyps wayps yapws aypws ypaws pyaws apyws payws ywpas wypas ypwas pywas wpyas pwyas awpys wapys apwys pawys wpays pways yawsp aywsp ywasp wyasp awysp waysp yaswp ayswp ysawp syawp asywp saywp ywsap wysap yswap sywap wsyap swyap awsyp wasyp aswyp sawyp wsayp swayp yapsw aypsw ypasw pyasw apysw paysw yaspw ayspw ysapw syapw asypw saypw ypsaw pysaw yspaw sypaw psyaw spyaw apsyw pasyw aspyw sapyw psayw spayw ywpsa wypsa ypwsa pywsa wpysa pwysa ywspa wyspa yswpa sywpa wsypa swypa ypswa pyswa yspwa sypwa psywa spywa wpsya pwsya wspya swpya pswya spwya awpsy wapsy apwsy pawsy wpasy pwasy awspy waspy aswpy sawpy wsapy swapy apswy paswy aspwy sapwy psawy spawy wpsay pwsay wspay swpay psway spway
Note: these 'words' (valid or invalid) are all the permutations of the word yawps. These words are obtained by scrambling the letters in yawps.