-er -ey c-- ccc cce cco ccr cct ccu ccx ce- cec cee ceo cer cet ceu cex cey co- coc coe coo cor cot cou cox coy crc cre cro crr crt cru crx cry ctc cte cto ctr ctt ctu ctx cty cuc cue cuo cur cut cuu cuy cxc cxo cxr cxt cxx cyc cye cyo cyr cyt ec- ecc ece eco ecr ect ecu ecx eec eee eeo eer eet eex eey eo- eoc eoe eoo eor eot eou erc ere ero err ert eru ery etc ete eto etr ett etu etx ety eu- euc eue eur eut eux ex- exc exe exo exr ext exu exx exy eyc eye eyo eyr eyt oc- occ oco ocr oct ocu ocx oec oee oeo oer oet oex oey oo- ooc ooo oor oot oox or- orc ore oro orr ort oru orx ory ot- otc ote oto otr ott otu ou- ouc oue ouo our out ox- oxc oxo oxt oxx oxy oye oyo rcc rce rco rcr rct rcu rcx re- rec ree reo rer ret reu rex rey roc roe roo ror rot rou rox roy rrc rrr rrt rru rtc rte rto rtr rtt rtu rtx rty ruc rue ruo rur rut ruu rux ruy rxr ry- ryc rye ryo ryr ryu ryy t-x tcc tce tco tcr tct tcu tcx te- tec tee teo ter tet teu tex tey to- toc toe too tor tot tou tox toy trc tre tro trr trt tru trx try ttc tte tto ttr ttt ttu ttx tty tuc tue tuo tur tut tuu tux tuy txe txt txu tyc tye tyo tyr tyt ucc uce uco ucr uct ucu uec uee uer uet uey uoc uoe uoo uor uot uox ur- urc ure uro urr urt uru urx ury utc ute uto utr utt utu utx uty uuc uue uur uut uuu uxc uxo uxr uxt uxu uyc uyo uyu xcr xcx xee xer xet xeu xex xoc xoo xor xot xox xrc xrt xrx xry xtc xtr xtx xty xue xxo xxx xxy xyr xyy ycc yce yco ycu ycy yec yee yeo yer yet yex yey yoc yoe yoo yor yot you yox yoy yrc yre yro yrt yru ytc yte yto ytr ytt ytu yue yuo yur yut yuu yux yuy yxe yxy yyc yye yyt yyu yyy

cccc cccu ccee ccoc ccrc ccre ccrt cctc cctt ccuc ccut cec- cece ceco cect ceec ceor ceou cer- cerc cere cero cert cery cet- cete ceto ceux cexe ceyu ceyx coce coco coct cocu coex coot cor- corc core coro corr cort cory cotc cote coto cott cotu coty coue cour cout coux couy coxe coxy coyo coyr coyt crcc crce crcr cre- crec cree creo cret creu crex croc croe croo cror crot croy crrt crtc crue crut crux cry- cryo ctec ctor ctot ctrc cucc cuce cuer cure curo curr curt cury cut- cutc cute cuto cutt cuy- cuyo cuyr cxro cxxx cyc- cycc cyre cyrt cyt- cyte cyto cyy- cyyc eccc ecce ecco ecct eco- ecot ecou ecrc ecrr ecru ect- ectc ecto eeee eeoc eerc eero eery eetc eete eetu eext eore eotc eoto eoux er-x ercc erce erec erer eret eroc eroe eroo errc erre erro ertu eruc erur eryc erye eryx etcc etco etec etee eter etoe etox etoy etre etro ette etto ettu etty etux euer eur- eurc eure euro eurt eury exco exec exer exo- exor exrx exte extr exxy eyec eyer eyet eyey eyot eyre eyry eyte eyyr o-eo occc occt oce ocee ocet ocre ocro ocrr oct- octe octo octy ocur oec- oecc oeec oere oeye oeyo oocr ooer oooo oore oort oory ooty orce orco ore- orec oreo orer orex orey oro- oroe oror orot oroy orro orry ortc orte orto oryx otee oter oto- otoe otoo otor otoy otre otro otry otte otto ottu otur otyr oucc ouer our- oure ouro ourt out- oute outo outy ouu- ouyr oxer oxo- oxox oxxo oxy- oyce oyee oyer oyeu oyou oyre rccc rcet rctc rcyc recc rece recr rect recu recy reet reot reou rere rero rert reru rery rete reto retr rett rety reue reut reuu reux rexx reye rocc roce roco roer roet roey roor root roox rorc rore roro rort roru rory rotc rote roto rotr rott roty roue rout roux rouy roxo roxy roye royt rrrr rtcc rtce rtee rtex ruce ruct ruer ruet ruoy rurc rure ruro ruru rute ruto rutt rutu ruty ryet ryot rytt ryue ryyt tccc tccu tctc teco tecr tect teec teer teet teor ter- terc tere tero terr teru tery tete teto tetr tett tetu tetx teut text teye teyr to-y toce toco toee toer toet toey toor toot torc tore toro torr tort toru torx tory totc tote toto totr tott toty tour tout tox- toxo toxt toyo toyt trcc tre- trec tree treo tret treu trex trey troc troe troo trot trou trox troy trtc trte trtr truc true trut truu trux try- trye tryo tteo tter ttoe ttoy tttt tucc tuco tuer tuet tuey tuor turc ture turo turr turt turu tury tute tuto tutt tutu tuty tuuo tuye tuyx txtr tyce tyco tyee tyer tyet tyr- tyre tyro tyrr tyte tyto tytt tyty tyxt ucrc ucut uext uocc uor- uore urcy ure- uret urex urey uro- uroo urox urre urry urte urur urut utec uter utor utoy utto uttu uuoc uuuu uxor uxue uyre xeer xer- xero xert xexe xoco xoro xote xout xoxo xoyo xtro xtry xuxu xxxo xxxx xxxy xyr- yccc ycee yctc ye-u yeer yeet yeot yeox yere yero yerr yert yery yete yeto yett yeue yeux yext yeye yeyo yeyr yoot yore yoro yort yory yote yott youe your yout youx yoxe yoye yoyo ytre yuce yuer yure yurt yury yute yuto yutu yuty yuxu yuye yuyu yyyy

-tree c-cor c-tec ccccc ccett ccoyo ceco- cecyt ceere ceoce ceoor cerc- cerce cerco cerec cerer ceret