-er a-a a-b aaa aab aad aae aak aao aap aar ab- aba abb abd abe abk abo abp abr ad- ada adb add ade adk ado adp adr aea aeb aed aee aek aeo aep aer aka akb akd ake akk ako akp akr aoa aob aod aoe aok aoo aop aor ap- apa apb apd ape apk apo app apr ar- ara arb ard are ark aro arp arr b-p baa bab bad bae bak bao bap bar bba bbb bbd bbe bbk bbo bbp bbr bda bdb bdd bde bdk bdo bdp bdr be- bea beb bed bee bek beo bep ber bka bkb bke bkk bko bkp bkr boa bob bod boe bok boo bop bor bpa bpb bpd bpe bpo bpp bpr bra brb brd bre brk bro brp brr daa dab dad dae dak dao dap dar dba dbb dbd dbe dbk dbo dbp dbr dda ddb ddd dde ddk ddo ddp ddr de- dea deb ded dee dek deo dep der dka dkb dke dkk dko dkp dkr doa dob dod doe dok doo dop dor dpa dpb dpd dpe dpk dpo dpp dpr dra drb drd dre drk dro drp drr eaa eab ead eae eak eao eap ear eba ebb ebd ebe ebk ebo ebp ebr ed- eda edb edd ede edk edo edp edr eea eeb eed eee eek eeo eep eer eka ekb ekd eke eko ekp ekr eo- eoa eob eod eoe eok eoo eop eor ep- epa epb epd epe epo epp epr era erb erd ere erk ero erp err ka- kaa kab kad kae kak kao kap kar kba kbb kbd kbe kbk kbo kbp kbr kda kdb kde kdk kdo kdp kdr ke- kea keb ked kee kek keo kep ker kkb kke kkk kkp kkr koa kob kod koe kok koo kop kor kpa kpd kpe kpk kpo kpp kpr kra krd krk kro krp krr oaa oab oad oae oak oao oap oar ob- oba obb obd obe obk obo obp obr oda odb odd ode odo odp odr oea oeb oed oee oeo oep oer oka okb okd oke okk oko okp okr oo- ooa oob ood ook ooo oop oor op- opa opb opd ope opk opo opp opr or- ora orb ord ore ork oro orp orr p-p paa pab pad pae pak pao pap par pba pbb pbd pbe pbk pbo pbp pbr pda pdb pdd pde pdk pdo pdp pdr pea peb ped pee pek peo pep per pka pkb pkd pke pko pkp pkr poa pob pod poe pok poo pop por ppa ppb ppd ppe ppk ppo ppp ppr pra prb prd pre prk pro prp prr ra- raa rab rad rae rak rao rap rar rba rbb rbd rbe rbk rbo rbp rbr rda rdb rdd rde rdo rdp rdr re- rea reb red ree rek reo rep rer rkb rke rkk rko rkp roa rob rod roe rok roo rop ror rpa rpb rpd rpe rpk rpo rpp rpr rra rrb rrd rrk rrp rrr

a-ak a-be a-do a-ok aaaa aaab aaad aaae aaap aaar aaba aabb aabd aabp aada aade aaea aaep aaka aake aaoe aaoo aapa aapo aara aard aare aaro aarp abaa abab abad abae abak abap abar abb- abba abbb abbe abbo abbr abda abdo abed abee aber aboa abob abod abok aboo abor abpa abpd abpp abpr abra abro adaa adab adad adae adak adao adap adar adba adda addd adde addo addr adea adeb adee adeo ader adob adod adoe adok adoo ador adp- adra adre adro aeap aede aeer aeka aer- aera aerd aero akaa akae akao akap akar aked akee aker akka akko akok akpo akr- akra akre aoba aokp aopo aora aorb apak apao apap apar apba apbr apda apdd apea aped apep aper apke apo- apod apoe apoo apop apor appa appd appr apra apre apro arab arad arae arak arap arar arba arbe arda arde ardo area ared aree arek areo arep arka arke arko aroa arob arod aroe aroo aror arpa arpe arr- arra arre arrk arro arrr baaa baad baak baar baba babb babe babo babr bada badb badd bade bado badr baed baek baer bak- baka bake bako bakr bapa bape bapp bar- bara barb bard bare bark baro barr bbad bbbb bbdd bbdo bbeb bbpr bd-r bead beak beap bear beba bebb bebe bebo beda bede bedo beeb beed beek beep beer beka beke beko beo- beod beok beor bepo bera berd bere berk bero berr bkpr boab boad boak boar boba bobb bobe bobo boda bodb bode bodo boea boee boeo boep boer boka boke boko boob bood booe book boop boor bopa bope bopp bor- bora bord bore bork boro borr bpda bpea bpoe bprd brab brad brae brak brao brda brdo brea breb bred bree brek breo brep brer brka brkb broa brob brod broe brok broo bror brrr d-bo daab daad daae daap daar daba dabb dabo dabp dada dade dado daeb daer daka dake dako dapa dape dapp dara darb dard dare dark daro darp darr dbar dbpd dddd ddpo ddre dead deae deak deap dear deba debe deda dedd dede dedo deeb deed deek deep deer dek- deka deke deop deor depa depe depo depp depr der- dera derb dere derk dero derp derr dkba doab doae doak doap doar doba dobb dobe dod- doda dodd dode dodo doea doek doer doka doke doko doob dood dook doop door dopa dope dopo dopp dopr dora dord dore dork doro dorp dorr dpaa dper dppa dprk draa drab drad drak drap drar drba drda drea dred dree drek drob drod drop drra eaba eada eadb eadd eadp eaop eapp eara earb eard eare earo earp ebba ebbo ebbr ebed eber eboe eboo ebor ebpo ebro edad edar edda edde eddo eddp ede- edea eder edod edra eede eeea eeee eeka eeke eera eero eka- ekab ekeb eked ekek eker ekka ekoa ekpe ekpo