spans psans sapns aspns pasns apsns spnas psnas snpas nspas pnsas npsas sanps asnps snaps nsaps ansps nasps panss apnss pnass npass anpss napss spasn psasn sapsn aspsn passn apssn spsan pssan sspan sspan pssan spsan saspn asspn ssapn ssapn asspn saspn passn apssn psasn spasn aspsn sapsn spnsa psnsa snpsa nspsa pnssa npssa spsna pssna sspna sspna pssna spsna snspa nsspa ssnpa ssnpa nsspa snspa pnssa npssa psnsa spnsa nspsa snpsa sansp asnsp snasp nsasp anssp nassp sasnp assnp ssanp ssanp assnp sasnp snsap nssap ssnap ssnap nssap snsap anssp nassp asnsp sansp nsasp snasp panss apnss pnass npass anpss napss pasns apsns psans spans aspns sapns pnsas npsas psnas spnas nspas snpas ansps nasps asnps sanps nsaps snaps
Note: these 'words' (valid or invalid) are all the permutations of the word spans. These words are obtained by scrambling the letters in spans.