hctib chtib htcib thcib cthib tchib hcitb chitb hictb ihctb cihtb ichtb hticb thicb hitcb ihtcb tihcb ithcb ctihb tcihb cithb icthb tichb itchb hctbi chtbi htcbi thcbi cthbi tchbi hcbti chbti hbcti bhcti cbhti bchti htbci thbci hbtci bhtci tbhci bthci ctbhi tcbhi cbthi bcthi tbchi btchi hcibt chibt hicbt ihcbt cihbt ichbt hcbit chbit hbcit bhcit cbhit bchit hibct ihbct hbict bhict ibhct bihct cibht icbht cbiht bciht ibcht bicht htibc thibc hitbc ihtbc tihbc ithbc htbic thbic hbtic bhtic tbhic bthic hibtc ihbtc hbitc bhitc ibhtc bihtc tibhc itbhc tbihc btihc ibthc bithc ctibh tcibh citbh ictbh ticbh itcbh ctbih tcbih cbtih bctih tbcih btcih cibth icbth cbith bcith ibcth bicth tibch itbch tbich btich ibtch bitch
Note: these 'words' (valid or invalid) are all the permutations of the word hctib. These words are obtained by scrambling the letters in hctib.