-er a-a a-b a-t aaa aab aae aao aap aar aat aav ab- aba abb abe abo abp abr abt abv aea aeb aee aeo aep aer aet aev aoa aob aoe aoo aop aor aot aov ap- apa apb ape apo app apr apt apv ar- ara arb are aro arp arr art arv at- ata atb ate ato atp atr att atv av- ava avb ave avo avp avr avt b-p baa bab bae bao bap bar bat bav bba bbb bbe bbo bbp bbr bbt be- bea beb bee beo bep ber bet bev boa bob boe boo bop bor bot bov bpa bpb bpe bpo bpp bpr bpt bpv bra brb bre bro brp brr brt brv bta btb bte bto btp btr btt btv bva bvb bve bvo bvp bvr bvt bvv eaa eab eae eao eap ear eat eav eba ebb ebe ebo ebp ebr ebt ebv eea eeb eee eeo eep eer eet eev eo- eoa eob eoe eoo eop eor eot ep- epa epb epe epo epp epr ept era erb ere ero erp err ert erv eta etb ete eto etp etr ett etv eva evb eve evo evp evr evt evv oaa oab oae oao oap oar oat oav ob- oba obb obe obo obp obr obt obv oea oeb oee oeo oep oer oet oo- ooa oob ooo oop oor oot oov op- opa opb ope opo opp opr opt opv or- ora orb ore oro orp orr ort orv ot- ota otb ote oto otp otr ott otv ov- ova ovb ove ovo ovp ovv p-p paa pab pae pao pap par pat pav pba pbb pbe pbo pbp pbr pbt pea peb pee peo pep per pet pev poa pob poe poo pop por pot pov ppa ppb ppe ppo ppp ppr ppt ppv pra prb pre pro prp prr prt prv pt- pta ptb pte pto ptp ptr ptt ptv pva pvb pve pvo pvp pvr pvt pvv ra- raa rab rae rao rap rar rat rav rba rbb rbe rbo rbp rbr rbt re- rea reb ree reo rep rer ret rev roa rob roe roo rop ror rot rov rpa rpb rpe rpo rpp rpr rpt rpv rra rrb rrp rrr rrt rta rtb rte rto rtp rtr rtt rtv rva rvb rve rvo rvp rvr rvt rvv taa tab tae tao tap tar tat tav tba tbb tbe tbo tbp tbr tbt tbv te- tea teb tee teo tep ter tet tev to- toa tob toe too top tor tot tov tpa tpb tpe tpo tpp tpr tpt tpv tra trb tre tro trp trr trt trv tta ttb tte tto ttp ttr ttt ttv tva tvb tve tvo tvp tvr tvt v-a v-e vaa vab vae vao vap var vat vav vba vbo vbr vbv vea veb vee veo vep ver vet voa vob voe voo vop vor vot vov vpa vpb vpe vpo vpp vpr vpt vra vrb vre vrp vrr vrt vta vtb vte vto vtr vtt vtv vva vvb vvo vvr vvt vvv

a-be aaaa aaab aaae aaap aaar aaav aaba aabb aabp aabt aaea aaep aaev aaoe aaoo aapa aapo aapt aara aare aaro aarp aart aata aatt aava abaa abab abae abap abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet aboa abob aboo abor abot abov abpa abpp abpr abra abro abta abva abvp aeap aeer aer- aera aero aeta aeto aetr aett aeva aoba aopo aora aorb aort apao apap apar apat apba apbr apea apep aper apet apev apo- apoe apoo apop apor apot appa appr appt apra apre apro aprt apta apte aptt aptv arab arae arap arar arat arba arbe area aree areo arep aret arev aroa arob aroe aroo aror arpa arpe arr- arra arre arro arrr arrt arta arte arto artr artv arva arve arvo at-t ataa atab atae atap atar atat atea atee ateo atep ater atob atoe atop ator atot atpr atra atre atro atrp atta atte atto attp attr avab avao avar avat avea aveo aver avor avot avra avre avro avva avvo baaa baar baat baba babb babe babo babr baer bapa bape bapp bapt bar- bara barb bare baro barr bart bata bate bato batt bava bave bbbb bbeb bbet bbpr beap bear beat beav beba bebb bebe bebo beeb beep beer beet beo- beor beot bepo bera bere bero berr bert beta bete beto bett betv bevo boab boar boat boba bobb bobe bobo boea boee boeo boep boer boet boob booe boop boor boot bopa bope bopp bor- bora bore boro borr bort bota botb bote boto bott bova bove bovo bpea bpoe bpot brab brae brao brat brav brea breb bree breo brep brer bret brev broa brob broe broo bror brot brrr btaa btbp btob btor btrt bttb eaba eaop eapp eara earb eare earo earp eart eata eate eave eavp ebba ebbo ebbr eber eboe eboo ebor ebpo ebro eeea eeee eera eero eeta eete eeva eora eore eota eoto epaa epee eper epor epot eppa eppo eppp epra eprb epro eprp epta epte eptv erap erat erba erbb erbe ereb erer eret erev erob eroe eroo erpa erpe erra erre erro erta erve etap etat etbr etee eter etoe etra etre etro etta ette etto etvo evae evap evar evat evea ever evet evoe evoo evop evra evre o-eo oaer oara oare oate obba obbo obea ober obet oboe obor obot obra obre obro oepa oera oere oeta oevp ooaa ooba oobe ooer oooo oora oore oort ootb ootp opap opar opep oper opet opo- opor oppa oppo opra opto orab orae orao orar orat orav orba orbb orbe orbo ore- orea oreb oreo orer oro- oroe oror orot orpe orra orro orta orte orto orve orvr otap otar otea otee otep oter oto- otoe otoo otor otov otpp otra otre otro otta otte otto ovar ovee over ovet ovo- ovoo ovot ovpp ovra ovre paap