hnrnpl hnrnpr hohhot hohloh hohoho holhol holloo hollop holnon holoor holton honnor honor- honton hoohoo hoopoo hooroo hooton hoplo- hoplon hopnpp hopton hororo horror horton hortor hotnot hotoro hotpot hotton hottot lloro lo-pro lollop lonhro lonnol lonrho lontor looloo lopho- loplop lorton lotorp lotpot lphoto n-toon non-no non-op nonhot nonono nonoon nonpro noonoo noonor noonto norton notho- nothot notron notton nottoo ohnono ohohoh oholot ohpooh ohtoto oloron onroll oohooh oooooo oporto optoro oroton orphon orrho- ortho- ottoor phlor- phlppl phono- phonon phoro- photo- photon phthor plonno plotno plplot polpol polpot polron polton ponton poopoo popopo poporo poppop poptop porno- porron porton potron potton pottop pppppp pronto proph- propho proto- proton r-loop rollon rollot ronnon ronron rooton rotolo rotton thonon thonor thorl thornn thoro- thoron throll throop to-on tohoro tollon tolono tolton tonlon tonono tonoro tonpon tonton toohot tootoo toppop toprol topton tororo toroth torpor tortor totnor totopo totoro totrot trollt tronoh tronto troph- tropo- troppo trotro