bings ibngs bnigs nbigs inbgs nibgs bigns ibgns bgins gbins igbns gibns bngis nbgis bgnis gbnis ngbis gnbis ingbs nigbs ignbs ginbs ngibs gnibs binsg ibnsg bnisg nbisg inbsg nibsg bisng ibsng bsing sbing isbng sibng bnsig nbsig bsnig sbnig nsbig snbig insbg nisbg isnbg sinbg nsibg snibg bigsn ibgsn bgisn gbisn igbsn gibsn bisgn ibsgn bsign sbign isbgn sibgn bgsin gbsin bsgin sbgin gsbin sgbin igsbn gisbn isgbn sigbn gsibn sgibn bngsi nbgsi bgnsi gbnsi ngbsi gnbsi bnsgi nbsgi bsngi sbngi nsbgi snbgi bgsni gbsni bsgni sbgni gsbni sgbni ngsbi gnsbi nsgbi sngbi gsnbi sgnbi ingsb nigsb ignsb ginsb ngisb gnisb insgb nisgb isngb singb nsigb snigb igsnb gisnb isgnb signb gsinb sginb ngsib gnsib nsgib sngib gsnib sgnib
Note: these 'words' (valid or invalid) are all the permutations of the word bings. These words are obtained by scrambling the letters in bings.