echoic cehoic ehcoic hecoic cheoic hceoic ecohic ceohic eochic oechic coehic ocehic ehocic heocic eohcic oehcic hoecic ohecic choeic hcoeic coheic ocheic hoceic ohceic echioc cehioc ehcioc hecioc cheioc hceioc ecihoc ceihoc eichoc iechoc ciehoc icehoc ehicoc heicoc eihcoc iehcoc hiecoc ihecoc chieoc hcieoc ciheoc icheoc hiceoc ihceoc ecoihc ceoihc eocihc oecihc coeihc oceihc eciohc ceiohc eicohc iecohc cieohc iceohc eoichc oeichc eiochc ieochc oiechc ioechc coiehc ociehc cioehc icoehc oicehc iocehc ehoicc heoicc eohicc oehicc hoeicc oheicc ehiocc heiocc eihocc iehocc hieocc iheocc eoihcc oeihcc eiohcc ieohcc oiehcc ioehcc hoiecc ohiecc hioecc ihoecc oihecc iohecc choiec hcoiec cohiec ochiec hociec ohciec chioec hcioec cihoec ichoec hicoec ihcoec coihec ocihec ciohec icohec oichec iochec hoicec ohicec hiocec ihocec oihcec iohcec echoci cehoci ehcoci hecoci cheoci hceoci ecohci ceohci eochci oechci coehci ocehci ehocci heocci eohcci oehcci hoecci ohecci choeci hcoeci coheci ocheci hoceci ohceci echcoi cehcoi ehccoi heccoi checoi hcecoi ecchoi cechoi ecchoi cechoi ccehoi ccehoi ehccoi heccoi echcoi cehcoi hcecoi checoi chceoi hcceoi ccheoi ccheoi hcceoi chceoi ecochi ceochi eocchi oecchi coechi ocechi eccohi cecohi eccohi cecohi cceohi cceohi eocchi oecchi ecochi ceochi ocechi coechi cocehi occehi ccoehi ccoehi occehi cocehi ehocci heocci eohcci oehcci hoecci ohecci ehcoci hecoci echoci cehoci hceoci cheoci eochci oechci ecohci ceohci ocehci coehci hoceci ohceci hcoeci choeci ocheci coheci chocei hcocei cohcei ochcei hoccei ohccei chcoei hccoei cchoei cchoei hccoei chcoei cochei occhei ccohei ccohei occhei cochei hoccei ohccei hcocei chocei ochcei cohcei echico cehico ehcico hecico cheico hceico ecihco ceihco eichco iechco ciehco icehco ehicco heicco eihcco iehcco hiecco ihecco chieco hcieco ciheco icheco hiceco ihceco echcio cehcio ehccio heccio checio hcecio ecchio cechio ecchio cechio ccehio ccehio ehccio heccio echcio cehcio hcecio checio chceio hcceio ccheio ccheio hcceio chceio ecicho ceicho eiccho ieccho ciecho icecho ecciho ceciho ecciho ceciho cceiho cceiho eiccho ieccho ecicho ceicho icecho ciecho ciceho icceho ccieho ccieho icceho ciceho ehicco heicco eihcco iehcco hiecco ihecco ehcico hecico echico cehico hceico cheico eichco iechco ecihco ceihco icehco ciehco hiceco ihceco hcieco chieco icheco ciheco chiceo hciceo cihceo ichceo hicceo ihcceo chcieo hccieo cchieo cchieo hccieo chcieo cicheo iccheo cciheo cciheo iccheo cicheo hicceo ihcceo hciceo chiceo ichceo cihceo ecoich ceoich eocich oecich coeich oceich ecioch ceioch eicoch iecoch cieoch iceoch eoicch oeicch eiocch ieocch oiecch ioecch coiech ociech cioech icoech oicech iocech ecocih ceocih eoccih oeccih coecih ocecih eccoih cecoih eccoih cecoih cceoih cceoih eoccih oeccih ecocih ceocih ocecih coecih coceih occeih ccoeih ccoeih occeih coceih ecicoh ceicoh eiccoh ieccoh ciecoh icecoh eccioh cecioh eccioh cecioh cceioh cceioh eiccoh ieccoh ecicoh ceicoh icecoh ciecoh ciceoh icceoh ccieoh ccieoh icceoh ciceoh eoicch oeicch eiocch ieocch oiecch ioecch eocich oecich ecoich ceoich oceich coeich eicoch iecoch ecioch ceioch iceoch cieoch oicech iocech ociech coiech icoech cioech coiceh ociceh cioceh icoceh oicceh iocceh cocieh occieh ccoieh ccoieh occieh cocieh cicoeh iccoeh ccioeh ccioeh iccoeh cicoeh oicceh iocceh ociceh coiceh icoceh cioceh ehoicc heoicc eohicc oehicc hoeicc oheicc ehiocc heiocc eihocc iehocc hieocc iheocc eoihcc oeihcc eiohcc ieohcc oiehcc ioehcc hoiecc ohiecc hioecc ihoecc oihecc iohecc ehocic heocic eohcic oehcic hoecic ohecic ehcoic hecoic echoic cehoic hceoic cheoic eochic oechic ecohic ceohic ocehic coehic hoceic ohceic hcoeic choeic ocheic coheic ehicoc heicoc eihcoc iehcoc hiecoc ihecoc ehcioc hecioc echioc cehioc hceioc cheioc eichoc iechoc ecihoc ceihoc icehoc ciehoc hiceoc ihceoc hcieoc chieoc icheoc ciheoc eoichc oeichc eiochc ieochc oiechc ioechc eocihc oecihc ecoihc ceoihc oceihc coeihc eicohc iecohc eciohc ceiohc iceohc cieohc oicehc iocehc ociehc coiehc icoehc cioehc hoicec ohicec hiocec ihocec oihcec iohcec hociec ohciec hcoiec choiec ochiec cohiec hicoec ihcoec hcioec chioec ichoec cihoec oichec iochec ocihec coihec icohec ciohec choice hcoice cohice ochice hocice ohcice chioce hcioce cihoce ichoce hicoce ihcoce coihce ocihce ciohce icohce oichce iochce hoicce ohicce hiocce ihocce oihcce iohcce chocie hcocie cohcie ochcie hoccie ohccie chcoie hccoie cchoie cchoie hccoie chcoie cochie occhie ccohie ccohie occhie cochie hoccie ohccie hcocie chocie ochcie cohcie chicoe hcicoe cihcoe ichcoe hiccoe ihccoe chcioe hccioe cchioe cchioe hccioe chcioe cichoe icchoe ccihoe ccihoe icchoe cichoe hiccoe ihccoe hcicoe chicoe ichcoe cihcoe coiche ociche cioche icoche oicche iocche cocihe occihe ccoihe ccoihe occihe cocihe cicohe iccohe cciohe cciohe iccohe cicohe oicche iocche ociche coiche icoche cioche hoicce ohicce hiocce ihocce oihcce iohcce hocice ohcice hcoice choice ochice cohice hicoce ihcoce hcioce chioce ichoce cihoce oichce iochce ocihce coihce icohce ciohce
Note: these 'words' (valid or invalid) are all the permutations of the word echoic. These words are obtained by scrambling the letters in echoic.