-er -up ddd dde ddo ddp ddr ddt ddu de- ded dee deo dep der det deu dod doe doo dop dor dot dou dpd dpe dpo dpp dpr dpt dpu drd dre dro drp drr drt dru dtd dte dto dtp dtr dtt dtu dud due duo dup dur dut ed- edd ede edo edp edr edt edu eed eee eeo eep eer eet eo- eod eoe eoo eop eor eot eou ep- epd epe epo epp epr ept epu erd ere ero erp err ert eru etd ete eto etp etr ett etu eu- eud eue eup eur eut odd ode odo odp odr odt odu oed oee oeo oep oer oet oo- ood ooo oop oor oot op- opd ope opo opp opr opt or- ord ore oro orp orr ort oru ot- otd ote oto otp otr ott otu ou- oud oue ouo oup our out p-p pdd pde pdo pdp pdr pdt pdu ped pee peo pep per pet peu pod poe poo pop por pot pou ppd ppe ppo ppp ppr ppt ppu prd pre pro prp prr prt pru pt- ptd pte pto ptp ptr ptt ptu pud pue pup pur put puu rdd rde rdo rdp rdr rdt rdu re- red ree reo rep rer ret reu rod roe roo rop ror rot rou rpd rpe rpo rpp rpr rpt rpu rrd rrp rrr rrt rru rtd rte rto rtp rtr rtt rtu rud rue ruo rup rur rut ruu tdd tde tdo tdp tdr tdt tdu te- ted tee teo tep ter tet teu to- tod toe too top tor tot tou tpd tpe tpo tpp tpr tpt tpu trd tre tro trp trr trt tru ttd tte tto ttp ttr ttt ttu tud tue tuo tup tur tut tuu udd ude udo udp udr udt udu ued uee uep uer uet uod uoe uoo uop uor uot up- upd upe upo upp upr upt upu ur- urd ure uro urp urr urt uru utd ute uto utp utr utt utu uue uur uut uuu

dddd ddot ddpo ddre dedd dede dedo dedu deed deep deer deet deop deor depe depo depp depr dept der- dere dero derp derr dete deto detr deue deur deut dod- dodd dode dodo doer dood doop door doot dope dopo dopp dopr dopt dord dore doro dorp dorr dort doru dotd dote doto dott doud doue doup dour dout dpdt dper dred dree dret drod drop drot drou drue drup drut druu dtdp dted dtor dtot dttp dudd dude dudo dudu duer duet duo- dupe dupo dure duro durt duru dute dutp duur duut edde eddo eddp ede- eder edod edou edru edup edur eede eedu eeee eero eete eetu eode eore eotd eoto epee eper epod epor epot eppo eppp epro eprp epte erde ered erer eret erod eroe eroo erpe erre erro ertu erur etee eter etoe etre etro ette etto ettu eude euer eur- eure euro eurt o-eo oddd oded odeo oder odet odoo odop odor odot odou odrp odtu odur oedo oere ooer oooo oord oore oort ootp oped opep oper opet opo- opor oppo opto orde ordo ordu ore- ored oreo orer oro- oroe oror orot orpe orro orte orto orup oted otee otep oter oto- otoe otoo otor otpp otre otro otte otto ottu otur oude oued ouer oupe our- oure ouro ourt out- oute outo ouu- pdpr ped- pede pedo peed peep peer peet peor peou pepd pepe pepo per- perd pere pero perp perr pert peru pete peto petr pett peur peut pod- podd pode podo podu poed poer poet pood poop poor poot pop- pope popo popp popt pore poro porr port potd pote poto pott potu poud poup pour pout pper ppod pppd pppo pppp ppru pptt ppur pre- pred pree prep pret preu pro- prod proe proo prop prot prou prpd prrd prtp prtr prud prue prut pruu pter ptop ptpd ptrd pu-e pudo pudu pued pueo puer puet pueu pupe pupu pur- pure puro purp purr puru put- pute puto putt putu rder redd rede redo redr redu reed reep reet reod reop reot reou repe repo repp repr rept repu rerd rere rero rert reru retd rete reto retr rett reue reup reut reuu rodd rode rodo roed roer roet rood roop roor root rope ropo rore roro rort roru rote roto rotr rott roud roue roup rout rpdp rpet rpoe rptd rred rrrr rtdt rtee rttp rudd rude rudo rudp rued ruer ruet rupe rupp rupt rurd rure ruro rurp ruru rute ruto rutt rutu ruud tdor tedd tede teed teer teet teor tepe tepp tepu ter- tere tero terp terr teru tete teto tetr tett tetu teut todd tode todo todt todu toed toee toer toet tood toor toot top- topd tope topo topp topt topu tord tore toro torp torr tort toru totd tote toto totr tott toup tour tout tpdu tped tper tppd tppp tppr tpte tptp tptr tput tre- tred tree treo tret treu trod troe troo trop trot trou trpe trpp trte trtr trud true trut truu tteo tter ttoe ttop tttt tude tudu tuer tuet tuor tupe tupo tupu turd ture turo turp turr turt turu tute tuto tutt tutu tuuo u-rp uder udet udoo udop udot udpd uor- uore updo uped upor uppe uppp uppu upto upup urde urdu ure- ured uret uro- uroo urpo urre urte urup urur urut utep uter utor utpd utto uttu uuuu

-tree d-dot d-rod ddddd dedde dedee deder dedur dedut deede deepe deepp deepu deere deore deoro depoe depop depor depot depue derde dered dero- derpt derre derro derue deter detoo detre dette detuo detur deure deut- deuto do-do dodoo dodro doerr doodo doore doote doout doped doper dopet doppe dordt dored doree doret dorot dorpe dorre dorte dorud doted doter dotoo dotto doude douer doupe doupt doure douro doute drdre dredd drede dreed dreep drepe drere drode drood droop drop- drope dropo dropt drote drott droue droup