choil hcoil cohil ochil hocil ohcil chiol hciol cihol ichol hicol ihcol coihl ocihl ciohl icohl oichl iochl hoicl ohicl hiocl ihocl oihcl iohcl choli hcoli cohli ochli hocli ohcli chloi hcloi clhoi lchoi hlcoi lhcoi colhi oclhi clohi lcohi olchi lochi holci ohlci hloci lhoci olhci lohci chilo hcilo cihlo ichlo hiclo ihclo chlio hclio clhio lchio hlcio lhcio cilho iclho cliho lciho ilcho licho hilco ihlco hlico lhico ilhco lihco coilh ocilh ciolh icolh oiclh ioclh colih oclih cloih lcoih olcih locih ciloh icloh clioh lcioh ilcoh licoh oilch iolch olich loich iloch lioch hoilc ohilc hiolc iholc oihlc iohlc holic ohlic hloic lhoic olhic lohic hiloc ihloc hlioc lhioc ilhoc lihoc oilhc iolhc olihc loihc ilohc liohc
Note: these 'words' (valid or invalid) are all the permutations of the word choil. These words are obtained by scrambling the letters in choil.