qemm qemu qere qero qerq qest qmmp qmrp qomo qoop qore qpct qqqq qrss qrst qsos qsqs qsqt qsrs qtos qtrs qucu quee quem quep quer ques quet qume quoc quom quop quor quos quot qurm quro qust qute quu- rccc rccs rcep rcet rcmp rcms rcos rcpo rcps rcpt rcsc rcss rctc rcts recc rece recm recp recr recs rect recu reem reep rees reet reme remo remp rems reop reos reot reou repe repo repp repr reps rept repu reqs rere rero rers rert reru rese reso resp resq ress rest rete reto retr rets rett reue reup reus reut reuu rmrp rmsc rmsp rmst rmtu rocc roce roco rocs roer roes roet rome romm romo romp roms room roop roor roos root rope ropo rops rorc rore roro rort roru rosc rose roso rosp ross rost rotc rote roto rotr rots rott roue roum roup rous rout rpcs rpet rpms rpoe rpos rpps rpts rrmc rrmp rrrr rrsp rrum rscc rscs rsee rsme rsos rspo rsps rsre rstp rsts rstu rsum rtcc rtce rtcm rtee rtes rtmc rtmp rtms rtps rtss rttp rtts ruce ruct ruer rues ruet rume rumm rumo rump rums rumt rupe rupp rupt rurc rure ruro rurp rurs ruru ruse ruso russ rust rusu rute ruto ruts rutt rutu s-os sccc scce sccm sccp sccs scct scec scee scep scer scet scmc scmm scmo scmp scms scom scoo scop scor scot scpe scpm scpo scps scpt scr- scrc scre scrs scsc scso scsr scst scsu sctc scto sctr scts scum scup scur scut se-c se-e se-o se-s se-t se-u sec- secc sece seco secr secs sect secu seec seem seep seeq seer sees seet seeu semc seme semp sems semu seoc seop sepe sepo sepp sepr seps sept sepu seqq seqs sequ serc sere serm sero serp serq serr sers sert seru sesc sese seso sess sest set- setc sete seto sets sett seur smcc smcp smec smee smep smet smoc smos smot smps smrt smsc smsp smss smtc smte smtp smtu smur smus smut soce socm soco socr socs soec soem soeo soep soes some somm somo soom soop soor soos soot sope sopo sopp sops sopu sore sorm soro sorr sors sort soru sose soso soss sost sotc sote sotm soto sotp sots sotu soue soum soup souq sour sous sout spcc spco spcs spec spee sper spes spet spme spms spmt spoc spoo spop spor spos spot spps spqr sprm spro sprs spse spso spsp spss spst sptc spto sptr spts spue spur spus sput sqcm sqep sqms sqrt srcc srct srec srem sreo sres srmc sros srpc srps srpt srsp srtp srtr sscc ssce sscp sscs ssec ssee ssem ssep sses sset ssmc ssoc ssop ssot sspc sspe sspo ssps sspt ssrc ssrm ssrs sssc sssm ssss sstc sstp ssts stcc stcp stcs stcu stec stee stem steo step ster stes stet stmc stmp stms stmt stoe stom stoo stop stor stos stot stou stpp stps strc stre stro strs stru stsm stss sttc sttr stuc stue stum stup stur stus stut suc- succ sucr sucs suee suer sues suet sueu sum- sume sumo sump sums sumu suor suos sup- supe supo supp supr sups supt suqs sur- surc sure suro surp surr surs surt suru sus- suse suso susp suss sust susu sute suto sutu suum suus t-mo tccc tccu tcep tcom tcos tcpo tctc tcts teco tecr tecs tect teec teem teer tees teet teme temo temp tems temu teom teor teos tepe tepp tepu ter- terc tere term tero terp terr ters teru tesc tese teso tesp tess test tete teto tetr tets tett tetu teut tmcc tmcm tmep tmos tmou tmps tmro tmsc tmsp tmtt toce toco toee toer toes toet tome tomm tomo tomp toms tomt toom toor toos toot top- tope topo topp tops topt topu torc tore torm toro torp torq torr tors tort toru tosc tose toso toss tost tosu totc tote totm toto totr tots tott toum toup tour tous tout tpcp tpcs tper tpms tpmt tppp tppr tprs tpsc tpte tptp tptr tput trcc tre- trec tree trem treo tres tret treu trms trmu troc troe trom troo trop tros trot trou trpc trpe trpm trpp trps trst trtc trte trtr truc true trus trut truu tscc tscp tsec tses tset tsmc tsmp tsom tsop tsos tsou tspo tsps tspt tsse tssm tssr tsst tstc tstm tsts tsum tsup ttcp tteo tter ttms ttoe ttop ttss tttt tucc tuco tuer tues tuet tume tump tums tumu tuor tuos tupe tupo tups tupu turc ture turm turo turp turr turs turt turu tusc tusm tuss tust tute tuto tuts tutt tutu tuum tuuo u-rp uccp uces ucmc ucom ucos ucrc ucsc ucsm ucst ucsu ucut uers uess umec umer umes umet ummo umms umoe umor umpc umpe umps umsp umsu umts umus umut uocc uomo uor- uore upcs upmc upme upor upos uppc uppe uppp uppu upsc upse upto upup uqcc ure- ures uret uro- urom uroo urpo urre urse urso urss ursu urte urts urum urup uruq urur urus urut uscc usce uscm usco uscs usee user uses uset usmc usme usmm usmp usms usoc usoe usos uspc uspo uspp usps ussc usse ussr usss usst ussu ustc uste ustm usto ustp usts usus utec utep uter utes utmp utor utsc utto uttu utuq uucp uuoc uuuu

-tree c-cor c-met c-p-c c-pop c-tec ccccc ccett ccpqs ccups ceco- cecos cecum ceere ceese cemec cemmo cemre cemse ceoce ceoor ceose ceous cepes cepet cepos cepot ceppo cerc- cerce cerco cercs cerec cerer ceres ceret cero- ceroc ceros cerou cerps cerre cerro cerrs cerse cerss certe certs cerus cesce cescr cesme cesse ceste cests cetes cetme ceto- cette cetus cmere co-co co-op cocc- cocce cocco coceo cocom cocos cocto cocum cocur cocus coepe coers coest coete coeur coeus comco comec comer comes comet comme commo commr comms comos comot compo comps compt comrs comse comte comu- comus cooee cooer coome coope