-er c-- ccc cce ccr ccs cct ccu ce- cec cee ceq cer ces cet ceu cqc cqs cqt crc cre crq crr crs crt cru csc cse csq csr css cst csu ctc cte ctq ctr cts ctt ctu cuc cue cuq cur cus cut cuu ec- ecc ece ecq ecr ecs ect ecu eec eee eer ees eet eqe eqq eqs eqt equ erc ere erq err ers ert eru es- esc ese esq esr ess est esu etc ete etr ets ett etu eu- euc eue eur eus eut qcc qcs qct qec qee qet qqq qqu qrc qre qrs qrt qru qsc qsr qst qtc qtq qtr qts qu- que qur qus qut rcc rce rcr rcs rct rcu re- rec ree req rer res ret reu rqc rqs rrc rrq rrr rrs rrt rru rsc rse rsq rsr rss rst rsu rtc rte rtq rtr rts rtt rtu ruc rue rur rus rut ruu scc sce scr scs sct scu se- sec see seq ser ses set seu sqq sqr sqs sr- src sre srq srr srs srt ss- ssc sse ssq ssr sss sst ssu stc ste stq str sts stt stu suc sue suq sur sus sut suu tcc tce tcr tcs tct tcu te- tec tee teq ter tes tet teu trc tre trq trr trs trt tru tsc tse tsq tsr tss tst tsu ttc tte ttr tts ttt ttu tuc tue tur tus tut tuu ucc uce ucr ucs uct ucu uec uee uer ues uet ur- urc ure urr urs urt uru usc use usr uss ust usu utc ute utr uts utt utu uuc uue uur uus uut uuu

cccc cccs cccu ccee ccrc ccre ccrs ccrt ccss ccst cctc cctt ccuc ccus ccut cec- cece cecs cect ceec cees cer- cerc cere cers cert cesc cese cesr cess cest cet- cete cets crcc crce crcr cre- crec cree cres cret creu crrt crss crst crtc crts crue crus crut cscc csce cscr cscs csec csee cser cset csrc csrs csse cssr cstc cstr csts csur csus ctec ctrc ctrs ctsc ctss ctsu ctts cucc cuce cucq cuer cues cure curr curs curt cuss cust cusu cut- cutc cute cuts cutt eccc ecce ecct eces ecrc ecrr ecru ecsc ecse ecss ecsu ect- ectc ects ecus eecs eeee eees eerc eers eese eetc eete eets eetu equ- eque equs ercc erce erec erer eres eret errc erre errs erse erst erts ertu eruc erur erus esce escr escs escu esee eser eses eset esqr esqs esse esst essu estc este estr ests esus etcc etcs etec etee eter etes etre etsu ette ettu euer eur- eurc eure eurt euse qcue qere qerq qest qqqq qrss qrst qsqs qsqt qsrs qtrs qucu quee quer ques quet qust qute quu- rccc rccs rcet rcsc rcss rctc rcts recc rece recr recs rect recu rees reet reqs rere rers rert reru rese resq ress rest rete retr rets rett reue reus reut reuu rrrr rscc rscs rsee rsre rsts rstu rtcc rtce rtee rtes rtss rtts ruce ruct ruer rues ruet rurc rure rurs ruru ruse russ rust rusu rute ruts rutt rutu sccc scce sccs scct scec scee scer scet scr- scrc scre scrs scsc scsr scst scsu sctc sctr scts scur scut se-c se-e se-s se-t se-u sec- secc sece secr secs sect secu seec seeq seer sees seet seeu seqq seqs sequ serc sere serq serr sers sert seru sesc sese sess sest set- setc sete sets sett seur sqrt srcc srct srec sres srtr sscc ssce sscs ssec ssee sses sset ssrc ssrs sssc ssss sstc ssts stcc stcs stcu stec stee ster stes stet strc stre strs stru stss sttc sttr stuc stue stur stus stut suc- succ sucr sucs suee suer sues suet sueu suqs sur- surc sure surr surs surt suru sus- suse suss sust susu sute sutu suus tccc tccu tctc tcts tecr tecs tect teec teer tees teet ter- terc tere terr ters teru tesc tese tess test tete tetr tets tett tetu teut trcc tre- trec tree tres tret treu trst trtc trte trtr truc true trus trut truu tscc tsec tses tset tsse tssr tsst tstc tsts tter ttss tttt tucc tuer tues tuet turc ture turr turs turt turu tusc tuss tust tute tuts tutt tutu uces ucrc ucsc ucst ucsu ucut uers uess uqcc ure- ures uret urre urse urss ursu urte urts uruq urur urus urut uscc usce uscs usee user uses uset ussc usse ussr usss usst ussu ustc uste usts usus utec uter utes utsc uttu utuq uuuu

-tree c-tec ccccc ccett ceere ceese cerc- cerce cercs cerec cerer ceres ceret cerre cerrs cerse cerss certe certs cerus cesce cescr cesse ceste cests cetes cette cetus crece creer crees cresc crese cress crest crete cretu creu- creue crres cruce crucq cruet crure cruse crust cruts csere cstcc ctree cttee cuers curce curer cures curet curre currs curse curst curts cusec cuser cusse custe cutcu cutee cuter cutes cutts ecrus ecser eeeee eques equus erecs erect erere erest erets erres errtu erses erste ersts erte erter ertes eruct eruts esces escrt esect esere esqre esque esser esses essse essue estce estee ester estes estet estre estur estus esure etest etete etree etres etseq etter ettes eturu eucre eurre eurus euser q-tee qrstu qsrsr queer queet quere quers quert quest quete queue qureq quruq qurus quscu qusqu qusur quurt recce recet rect- recte rects recue recur recus recut reece reecs reere reese reest reque rere- reree reres reret resee reses reset resse reste restr rests resue resus retee reter retes retsu rette retts reuer reuet reuse reuss reute rsust rucer rucuq ruere ruers ruete rurec rusce ruses russe ruste rusts rustu ruter rutte ruutu s-tec scere scert screc scree scrue scrus scter sctrs scuet scure scurr scurt scuse scut- scute scuts scutt secre secte sects secur secus seece seere seers seese seest seesu seete serce serec serer