hwyls whyls hywls yhwls wyhls ywhls hwlys whlys hlwys lhwys wlhys lwhys hylws yhlws hlyws lhyws ylhws lyhws wylhs ywlhs wlyhs lwyhs ylwhs lywhs hwysl whysl hywsl yhwsl wyhsl ywhsl hwsyl whsyl hswyl shwyl wshyl swhyl hyswl yhswl hsywl shywl yshwl syhwl wyshl ywshl wsyhl swyhl yswhl sywhl hwlsy whlsy hlwsy lhwsy wlhsy lwhsy hwsly whsly hswly shwly wshly swhly hlswy lhswy hslwy shlwy lshwy slhwy wlshy lwshy wslhy swlhy lswhy slwhy hylsw yhlsw hlysw lhysw ylhsw lyhsw hyslw yhslw hsylw shylw yshlw syhlw hlsyw lhsyw hslyw shlyw lshyw slhyw ylshw lyshw yslhw sylhw lsyhw slyhw wylsh ywlsh wlysh lwysh ylwsh lywsh wyslh ywslh wsylh swylh yswlh sywlh wlsyh lwsyh wslyh swlyh lswyh slwyh ylswh lyswh yslwh sylwh lsywh slywh
Note: these 'words' (valid or invalid) are all the permutations of the word hwyls. These words are obtained by scrambling the letters in hwyls.