-er -ol eee eef eek eel eem eeo eer ef- efe eff efl efm efo efr eke ekf ekl eko ekr ele elf elk ell elm elo elr em- eme emf emk eml emm emo emr eo- eoe eof eok eol eom eoo eor ere erf erk erl erm ero err fee fef fek fel fem feo fer ffe fff ffk ffl ffm ffo ffr fkf fkk fkl fkm fle flf fll flm flo flr fme fmf fml fmm fmo fmr foe fof fok fol fom foo for fre frf frk frl frm fro frr ke- kee kef kek kel kem keo ker kff kfm kfo kke kkk kkl kkm kkr kl- klf klm klo klr kme kmf kmk kml kmm kmo koe kof kok kol kom koo kor krf krk krl kro krr lee lef lek lel lem leo ler lfe lff lfk lfl lfm lfo lfr lkl lkr lle llf llk lll llm llo llr lme lmf lmk lml lmm lmo lmr loe lof lok lol lom loo lor lrf lrk lrm lro lrr m-f m-o m-r mee mef mek mel mem meo mer mfe mff mfl mfm mfo mfr mke mkk mkl mkm mko mkr mle mlf mlk mll mlm mlo mlr mme mmf mmk mml mmm mmo mmr moe mof mok mol mom moo mor mre mrf mrk mrl mrm mro mrr oee oef oel oem oeo oer of- ofe off ofl ofm ofo ofr oke okk okl oko okr ole olf olk oll olm olo om- ome omf oml omm omo omr oo- oof ook ool oom ooo oor or- ore orf ork orl orm oro orr re- ree ref rek rel rem reo rer rfe rff rfk rfl rfm rfo rfr rke rkf rkk rkm rko rle rlf rll rlm rlo rlr rme rmf rml rmm rmo rmr roe rof rok rol rom roo ror rrf rrk rrl rrm rrr

eeee eefe eefl eeke eele eemo eero efeo efke efor ekek eker elee elef elek elem eleo eler elfe elke elko elle ello elme elml elmo elok elom elro emek emel emer emle emlm emme emml emor emre eole eolo eore eorl erel erem erer erke erle erll erme ermo eroe erol eroo erre erro f--k feek feel feem feer fefe feff fefo feke feko fele felf felk fell felm felo feme femm feof fere ferk ferm fero ferr ffee ffff ffrr flee flem fler floe flok flom floo flor foer fofo foke fole folk foll folo folr fome fomo foof fook fool foom for- fore fork forl form foro forr free frem freo froe frol from k-lo keef keek keel keem keer keff kefr keke kekl keko kele kelf kelk kell kelm kelo keme kemm kemo kemr keok keol keom ker- kere kerf kerk kerl kerm kero kerr kfel kfer kfff kffk kffm kflf kfll kflo kfme kfmf kfmk kfml kfmm kfmo kfmr kfok kfom kfoo kfor kfre kfrm kfro kfrr kkfm kkfr kkkk kklf kkll kklo kkmk kkml kkmo kkmr kkol kkoo kkor kkre kkrf kkrk kkrl kkro kkrr klee klef klek klem kleo kler klfe klff klfm klkk klkl klko klkr klle kllk klmf klmk klmm klmr kloe klok klol kloo klor klrf klrk klrm klrr kmel kmem kmeo kmer kmfm kmfr kmke kmkf kmkk kmkl kmko kmle kmlk kmlo kmme kmmf kmmk kmml kmmm kmmo kmmr kmoe kmok kmom kmor kmrf kmro kmrr koel kofe koff kofk kofm kofo koke kokf kokk koko kokr kole kolf kolk koll kolm kolo kolr kome komo komr kook kool kooo koor kore korf kork korl koro korr kree kref krek krem kreo krfe krff krfm krfo krke krkk krko krkr krle krlf krme krml krmo krmr kroe krof krok krol krom kroo kror krre krrf krrk krrl krrm krro krrr leef leek leel leem leer lefe leff leke lekk leko lele lell lelo leme lemm lemo leof leok leom leor lere lerk lerm lero lfmr llef llll lloo lmfm lmmr lofe loff loke lokk loko lole loll lolo lome lomm lomo looe loof look lool loom loor lore lork loro lrrr meef meek meel meem meer mefe meff mefo meke meko mel- mele melf melk mell melo meme meml memo memr meok meor mer- mere merf merk merl merm mero mfor mker mkfm mlle mmff mmmm mmor mmrf moef moel mofe moff mofo moke moko mole molk moll molo molr mome momo mooe mook mool moor more morf mork morl moro mree mrkr mrml o-eo oele oeme oere oerm ofek ofem ofer off- offe offo offr ofme ofml ofor ofre oker okko oklo okmo okok okol okom okor okre okro ole- olef oleo oler olfe olle ollo olmo olof olom olor omee omeo omer omle omo- omoe omoo omor omre omro ooer ooff oolo oome oooo oore ore- orek orel orem oreo orer orfe orff orke orko orle orlo orme ormo oro- oroe orof orok orom oror orro reef reek reel reem refe reff refl refr reke reko rele rell relm relo reme remo reof reol rere rero rfef rfem rffl rkkf rlee rlef rlml rmll roel roer rofe roff rofl rofo roke rokk roko rokr role rolf rolk roll rolm rolo rome romk romm romo roof rook rool room roor rore rork roro rrkm rrle rrrr

-form eeeee eeklo eeler efere effer efore efrem ekeko ekker eklof ekmek ekool ekrem elele eleme eleo- elkem ellek ellel eller elloe elmer eloee eloff eloko elole elome eloor elore eloro emeer emele emell emere emerk emerl emmer emore eofor eomer eorre erem- eremo erere erkel erkko erome eroom eroor erore errol error feele feeme feeor feere fefor felle femle femme femoe feoff feole feorm ferel ferle ferlo ferme fermo ferr- ferre ferro fleek fleem fleer fleke fleme flere flerk flero floke floko flook floom floor flore floro fmllr fmole fokel fokke folke folle follo fomor foole foome foore fore- forel foreo form- forme forro freek freel freer freke freme fremm frere frome fromm froom frore k-mer keefe keele keere kefee kekem kelek kelle kelme kemer