uphill puhill uhpill hupill phuill hpuill upihll puihll uiphll iuphll piuhll ipuhll uhipll huipll uihpll iuhpll hiupll ihupll phiull hpiull pihull iphull hipull ihpull uphlil puhlil uhplil huplil phulil hpulil uplhil pulhil ulphil luphil pluhil lpuhil uhlpil hulpil ulhpil luhpil hlupil lhupil phluil hpluil plhuil lphuil hlpuil lhpuil upilhl puilhl uiplhl iuplhl piulhl ipulhl uplihl pulihl ulpihl lupihl pluihl lpuihl uilphl iulphl uliphl luiphl iluphl liuphl piluhl ipluhl pliuhl lpiuhl ilpuhl lipuhl uhilpl huilpl uihlpl iuhlpl hiulpl ihulpl uhlipl hulipl ulhipl luhipl hluipl lhuipl uilhpl iulhpl ulihpl luihpl iluhpl liuhpl hilupl ihlupl hliupl lhiupl ilhupl lihupl philul hpilul pihlul iphlul hiplul ihplul phliul hpliul plhiul lphiul hlpiul lhpiul pilhul iplhul plihul lpihul ilphul liphul hilpul ihlpul hlipul lhipul ilhpul lihpul uphill puhill uhpill hupill phuill hpuill upihll puihll uiphll iuphll piuhll ipuhll uhipll huipll uihpll iuhpll hiupll ihupll phiull hpiull pihull iphull hipull ihpull uphlil puhlil uhplil huplil phulil hpulil uplhil pulhil ulphil luphil pluhil lpuhil uhlpil hulpil ulhpil luhpil hlupil lhupil phluil hpluil plhuil lphuil hlpuil lhpuil upilhl puilhl uiplhl iuplhl piulhl ipulhl uplihl pulihl ulpihl lupihl pluihl lpuihl uilphl iulphl uliphl luiphl iluphl liuphl piluhl ipluhl pliuhl lpiuhl ilpuhl lipuhl uhilpl huilpl uihlpl iuhlpl hiulpl ihulpl uhlipl hulipl ulhipl luhipl hluipl lhuipl uilhpl iulhpl ulihpl luihpl iluhpl liuhpl hilupl ihlupl hliupl lhiupl ilhupl lihupl philul hpilul pihlul iphlul hiplul ihplul phliul hpliul plhiul lphiul hlpiul lhpiul pilhul iplhul plihul lpihul ilphul liphul hilpul ihlpul hlipul lhipul ilhpul lihpul uphlli puhlli uhplli huplli phulli hpulli uplhli pulhli ulphli luphli pluhli lpuhli uhlpli hulpli ulhpli luhpli hlupli lhupli phluli hpluli plhuli lphuli hlpuli lhpuli uphlli puhlli uhplli huplli phulli hpulli uplhli pulhli ulphli luphli pluhli lpuhli uhlpli hulpli ulhpli luhpli hlupli lhupli phluli hpluli plhuli lphuli hlpuli lhpuli upllhi pullhi ulplhi luplhi plulhi lpulhi upllhi pullhi ulplhi luplhi plulhi lpulhi ullphi lulphi ullphi lulphi lluphi lluphi plluhi lpluhi plluhi lpluhi llpuhi llpuhi uhllpi hullpi ulhlpi luhlpi hlulpi lhulpi uhllpi hullpi ulhlpi luhlpi hlulpi lhulpi ullhpi lulhpi ullhpi lulhpi lluhpi lluhpi hllupi lhlupi hllupi lhlupi llhupi llhupi phllui hpllui plhlui lphlui hlplui lhplui phllui hpllui plhlui lphlui hlplui lhplui pllhui lplhui pllhui lplhui llphui llphui hllpui lhlpui hllpui lhlpui llhpui llhpui upillh puillh uipllh iupllh piullh ipullh uplilh pulilh ulpilh lupilh pluilh lpuilh uilplh iulplh uliplh luiplh iluplh liuplh pilulh iplulh pliulh lpiulh ilpulh lipulh upillh puillh uipllh iupllh piullh ipullh uplilh pulilh ulpilh lupilh pluilh lpuilh uilplh iulplh uliplh luiplh iluplh liuplh pilulh iplulh pliulh lpiulh ilpulh lipulh upllih pullih ulplih luplih plulih lpulih upllih pullih ulplih luplih plulih lpulih ullpih lulpih ullpih lulpih llupih llupih plluih lpluih plluih lpluih llpuih llpuih uillph iullph ulilph luilph ilulph liulph uillph iullph ulilph luilph ilulph liulph ulliph luliph ulliph luliph lluiph lluiph illuph liluph illuph liluph lliuph lliuph pilluh iplluh pliluh lpiluh ilpluh lipluh pilluh iplluh pliluh lpiluh ilpluh lipluh plliuh lpliuh plliuh lpliuh llpiuh llpiuh illpuh lilpuh illpuh lilpuh llipuh llipuh uhillp huillp uihllp iuhllp hiullp ihullp uhlilp hulilp ulhilp luhilp hluilp lhuilp uilhlp iulhlp ulihlp luihlp iluhlp liuhlp hilulp ihlulp hliulp lhiulp ilhulp lihulp uhillp huillp uihllp iuhllp hiullp ihullp uhlilp hulilp ulhilp luhilp hluilp lhuilp uilhlp iulhlp ulihlp luihlp iluhlp liuhlp hilulp ihlulp hliulp lhiulp ilhulp lihulp uhllip hullip ulhlip luhlip hlulip lhulip uhllip hullip ulhlip luhlip hlulip lhulip ullhip lulhip ullhip lulhip lluhip lluhip hlluip lhluip hlluip lhluip llhuip llhuip uillhp iullhp ulilhp luilhp ilulhp liulhp uillhp iullhp ulilhp luilhp ilulhp liulhp ullihp lulihp ullihp lulihp lluihp lluihp illuhp liluhp illuhp liluhp lliuhp lliuhp hillup ihllup hlilup lhilup ilhlup lihlup hillup ihllup hlilup lhilup ilhlup lihlup hlliup lhliup hlliup lhliup llhiup llhiup illhup lilhup illhup lilhup llihup llihup phillu hpillu pihllu iphllu hipllu ihpllu phlilu hplilu plhilu lphilu hlpilu lhpilu pilhlu iplhlu plihlu lpihlu ilphlu liphlu hilplu ihlplu hliplu lhiplu ilhplu lihplu phillu hpillu pihllu iphllu hipllu ihpllu phlilu hplilu plhilu lphilu hlpilu lhpilu pilhlu iplhlu plihlu lpihlu ilphlu liphlu hilplu ihlplu hliplu lhiplu ilhplu lihplu phlliu hplliu plhliu lphliu hlpliu lhpliu phlliu hplliu plhliu lphliu hlpliu lhpliu pllhiu lplhiu pllhiu lplhiu llphiu llphiu hllpiu lhlpiu hllpiu lhlpiu llhpiu llhpiu pillhu ipllhu plilhu lpilhu ilplhu liplhu pillhu ipllhu plilhu lpilhu ilplhu liplhu pllihu lplihu pllihu lplihu llpihu llpihu illphu lilphu illphu lilphu lliphu lliphu hillpu ihllpu hlilpu lhilpu ilhlpu lihlpu hillpu ihllpu hlilpu lhilpu ilhlpu lihlpu hllipu lhlipu hllipu lhlipu llhipu llhipu illhpu lilhpu illhpu lilhpu llihpu llihpu
Note: these 'words' (valid or invalid) are all the permutations of the word uphill. These words are obtained by scrambling the letters in uphill.