spang psang sapng aspng pasng apsng spnag psnag snpag nspag pnsag npsag sanpg asnpg snapg nsapg anspg naspg pansg apnsg pnasg npasg anpsg napsg spagn psagn sapgn aspgn pasgn apsgn spgan psgan sgpan gspan pgsan gpsan sagpn asgpn sgapn gsapn agspn gaspn pagsn apgsn pgasn gpasn agpsn gapsn spnga psnga snpga nspga pnsga npsga spgna psgna sgpna gspna pgsna gpsna sngpa nsgpa sgnpa gsnpa ngspa gnspa pngsa npgsa pgnsa gpnsa ngpsa gnpsa sangp asngp snagp nsagp ansgp nasgp sagnp asgnp sganp gsanp agsnp gasnp sngap nsgap sgnap gsnap ngsap gnsap angsp nagsp agnsp gansp ngasp gnasp pangs apngs pnags npags anpgs napgs pagns apgns pgans gpans agpns gapns pngas npgas pgnas gpnas ngpas gnpas angps nagps agnps ganps ngaps gnaps
Note: these 'words' (valid or invalid) are all the permutations of the word spang. These words are obtained by scrambling the letters in spang.