culex uclex cluex lcuex ulcex lucex cuelx ucelx ceulx eculx ueclx euclx cleux lceux celux eclux lecux elcux ulecx luecx uelcx eulcx leucx elucx culxe uclxe cluxe lcuxe ulcxe lucxe cuxle ucxle cxule xcule uxcle xucle clxue lcxue cxlue xclue lxcue xlcue ulxce luxce uxlce xulce lxuce xluce cuexl ucexl ceuxl ecuxl uecxl eucxl cuxel ucxel cxuel xcuel uxcel xucel cexul ecxul cxeul xceul excul xecul uexcl euxcl uxecl xuecl exucl xeucl clexu lcexu celxu eclxu lecxu elcxu clxeu lcxeu cxleu xcleu lxceu xlceu cexlu ecxlu cxelu xcelu exclu xeclu lexcu elxcu lxecu xlecu exlcu xelcu ulexc luexc uelxc eulxc leuxc eluxc ulxec luxec uxlec xulec lxuec xluec uexlc euxlc uxelc xuelc exulc xeulc lexuc elxuc lxeuc xleuc exluc xeluc
Note: these 'words' (valid or invalid) are all the permutations of the word culex. These words are obtained by scrambling the letters in culex.