pling lping pilng iplng lipng ilpng plnig lpnig pnlig nplig lnpig nlpig pinlg ipnlg pnilg npilg inplg niplg linpg ilnpg lnipg nlipg inlpg nilpg plign lpign pilgn iplgn lipgn ilpgn plgin lpgin pglin gplin lgpin glpin pigln ipgln pgiln gpiln igpln gipln ligpn ilgpn lgipn glipn iglpn gilpn plngi lpngi pnlgi nplgi lnpgi nlpgi plgni lpgni pglni gplni lgpni glpni pngli npgli pgnli gpnli ngpli gnpli lngpi nlgpi lgnpi glnpi nglpi gnlpi pingl ipngl pnigl npigl inpgl nipgl pignl ipgnl pginl gpinl igpnl gipnl pngil npgil pgnil gpnil ngpil gnpil ingpl nigpl ignpl ginpl ngipl gnipl lingp ilngp lnigp nligp inlgp nilgp lignp ilgnp lginp glinp iglnp gilnp lngip nlgip lgnip glnip nglip gnlip inglp niglp ignlp ginlp ngilp gnilp
Note: these 'words' (valid or invalid) are all the permutations of the word pling. These words are obtained by scrambling the letters in pling.