lops lore loro lors losc lose loso losp loss lost lote lotl loto lotr lots lott lpec lppl lprp lpsc lpss lrcs lroc lrps lrrc lrrr lrse lrst lrts ls-r lsco lscs lses lset lspl lspr lsrc lsso lssp lssr lsts ltcc ltcs ltee ltps ltrs ltsp ltsr lttc lttr o-eo occc occt oce ocee ocet oclc ocos ocpp ocre ocrl ocro ocrr ocrs oct- octe octo octs oec- oecc oeec oele oeps oere oers oese oest olcc ole- oleo oler oles olet olle ollo olor olos olot olpc olpe olst oocr ooer ooes oolo oooo ooos oops oore oort oose oost ootp oots opec opel opep oper opes opet ople opls opo- opor opos oppo opps opto opts orce orco orcs ore- orec orel oreo orer ores orle orlo oro- oroe oror oros orot orpc orpe orps orro orrs orse orso ortc orte orto orts oscc osce oscl osco osec osee osel oser oses oset oslo osoo osor osos osro osse osso ostc oste ostr osts otcl otee otep oter otes oto- otoe otoo otor otos otpp otre otro otrs otse otso otte otto otts pccc pcce pccl pccs pcep pcer pcll pclo pcoe pcos pcpp pcps pcrc pcre pcrl pcse pcso pcte pcts pece pecl peco pecr pecs pect peec peel peep peer pees peet pel- pele pell pelo pels pelt peor pepe pepo peps per- perc pere perl pero perp perr pers pert pese peso pess pest pete peto petr pets pett plcc plce ple- plec plee pleo ples plet ploc ploo plop plos plot plpp plss pltt poce poco pocs poel poer poes poet pole poll polo pols polt pool poop poor poos poot pop- popc pope popo popp pops popt porc pore poro porr pors port pose poso poss post potc pote poto pots pott ppcc ppcs pper pple pplo ppos pppo pppp ppps pprc ppss ppts pptt prcc prcp prcs pre- prec pree prel prep pres pret prle prlr prls pro- proc proe prol proo prop pros prot prps prrs prsc prse prsl prso prss prtc prtp prtr psco psec psel psoc psol psos pspp pspr psps psrp pssc psse psso psst psts ptcc ptcl pter ptol ptop pttc rccc rccs rcep rcet rcle rcls rcos rcpo rcps rcpt rcsc rcsl rcss rctc rcts recc rece recp recr recs rect reel reep rees reet rele rell relo relp rels relt reol reop reos reot repe repl repo repp repr reps rept rere rero rers rert rese reso resp ress rest rete reto retr rets rett rlcs rlee rlls rocc roce roco rocs roel roer roes roet role roll rolo rolp rolt rool roop roor roos root rope ropo rops rorc rore roro rort rosc rose roso rosp ross rost rotc rote rotl roto rotr rots rott rpcs rpet rpls rpoe rpos rpps rpts rrle rrrr rrsp rscc rscs rsee rslc rslp rsos rspo rsps rsre rssl rstp rsts rtcc rtce rtee rtes rtle rtls rtlt rtps rtss rttp rtts s-os sccc scce sccl sccp sccs scct scec scee scel scep scer scet scl- sclc scls scol scoo scop scor scot scpe scpl scpo scps scpt scr- scrc scre scrs scsc scsl scso scsr scst sctc sctl scto sctr scts se-c se-e se-o se-s se-t sec- secc sece seco secr secs sect seec seel seep seer sees seet sele sell selo sels selt seoc seol seop sepe sepo sepp sepr seps sept serc sere sero serp serr sers sert sesc sese seso sess sest set- setc sete setl seto sets sett slcc slee slep sler sles slet sllp sloc sloe sloo slop slos slot slpp slps slrc slre slrp slrs slsc slst slts soce socl soco socr socs soec soel soeo soep soes sole soll solo solp solr sols solt sool soop soor soos soot sope sopo sopp sops sore soro sorr sors sort sose soso soss sost sotc sote sotl soto sotp sots spcc spco spcs spec spee spel sper spes spet splc sple splo splp splr spls spoc spoo spop spor spos spot spps spro sprs spse spso spsp spss spst sptc spto sptr spts srcc srct srec sreo sres sros srpc srps srpt srsp srtp srtr sscc ssce sscp sscs ssec ssee ssep sses sset sslc ssle sslp sslt ssoc ssop ssot sspc sspe sspl sspo ssps sspt ssrc ssrl ssrs sssc ssss sstc sstl sstp ssts stcc stcp stcs stec stee stel steo step ster stes stet stlc stle stlo stlt stoe stol stoo stop stor stos stot stpp stps strc stre stro strs stss sttc sttr tccc tcep tcos tcpo tctc tcts tecl teco tecr tecs tect teec teel teer tees teet tel- telc tele tell telo tels telt teor teos tepe tepp ter- terc tere tero terp terr ters tesc tese tesl teso tesp tess test tete teto tetr tets tett tlco tlos tlrs toce toco toee toer toes toet tol- tole toll tolo tolt tool toor toos toot top- tope topo topp tops topt torc tore toro torp torr tors tort tosc tose toso toss tost totc tote toto totr tots tott tpcp tpcs tper tpls tpol tppp tppr tprs tpsc tpte tptp tptr trcc trcl tre- trec tree treo tres tret troc troe troo trop tros trot trpc trpe trpp trps trst trtc trte trtr tscc tscp tsec tses tset tsol tsop tsos tspo tsps tspt tsse tssr tsst tstc tsts ttcp tteo tter ttoe ttop ttss tttt

-tree c-cor c-p-c c-pop c-tec ccccc cccsl ccell ccett ccpls ccrcl ccrel cctrl ceco- cecos ceele ceelo ceere ceese celco celer celes cell- celle cello cells celo- celos celse celso celss celte celts ceoce ceoor ceorl ceose cepes cepet cepos cepot ceppo cerc- cerce cerco cercs cerec cerer ceres ceret cero- ceroc ceros cerps cerre cerro cerrs cerse cerss certe certs cesce cescr cesse ceste cests cetes ceto- cette cleco cleer cleet cleos clepe clept clerc clere cless clete cleto clett cloes cloop cloor cloos cloot clope clops clore clort close closo closs clost clote clots co-co co-op cocc-