yesks eysks yseks syeks esyks seyks yekss eykss ykess kyess ekyss keyss yskes sykes ykses kyses skyes ksyes eskys sekys eksys kesys skeys kseys yessk eyssk ysesk syesk esysk seysk yessk eyssk ysesk syesk esysk seysk yssek sysek yssek sysek ssyek ssyek essyk sesyk essyk sesyk sseyk sseyk yekss eykss ykess kyess ekyss keyss yesks eysks yseks syeks esyks seyks ykses kyses yskes sykes ksyes skyes eksys kesys eskys sekys kseys skeys yskse sykse yksse kysse skyse ksyse ysske syske ysske syske ssyke ssyke yksse kysse yskse sykse ksyse skyse sksye kssye sskye sskye kssye sksye esksy seksy ekssy kessy skesy ksesy essky sesky essky sesky sseky sseky ekssy kessy esksy seksy ksesy skesy sksey kssey sskey sskey kssey sksey
Note: these 'words' (valid or invalid) are all the permutations of the word yesks. These words are obtained by scrambling the letters in yesks.