-er a-a a-b a-t aaa aab aae aam aao aar aat ab- aba abb abe abm abo abr abt aea aeb aee aem aeo aer aet ama amb ame amm amo amr amt aoa aob aoe aom aoo aor aot ar- ara arb are arm aro arr art at- ata atb ate atm ato atr att baa bab bae bam bao bar bat bba bbb bbe bbm bbo bbr bbt be- bea beb bee bem beo ber bet bma bmb bme bmm bmo bmr bmt boa bob boe bom boo bor bot bra brb bre brm bro brr brt bta btb bte btm bto btr btt eaa eab eae eam eao ear eat eba ebb ebe ebm ebo ebr ebt eea eeb eee eem eeo eer eet em- ema emb eme emm emo emr emt eo- eoa eob eoe eom eoo eor eot era erb ere erm ero err ert eta etb ete etm eto etr ett m-o m-r maa mab mae mam mao mar mat mba mbb mbe mbm mbo mbr mbt mea meb mee mem meo mer met mma mmb mme mmm mmo mmr mmt moa mob moe mom moo mor mot mra mrb mre mrm mro mrr mrt mta mtb mte mtm mto mtr mtt oaa oab oae oam oao oar oat ob- oba obb obe obm obo obr obt oea oeb oee oem oeo oer oet om- oma omb ome omm omo omr omt oo- ooa oob oom ooo oor oot or- ora orb ore orm oro orr ort ot- ota otb ote otm oto otr ott ra- raa rab rae ram rao rar rat rba rbb rbe rbm rbo rbr rbt re- rea reb ree rem reo rer ret rma rmb rme rmm rmo rmr rmt roa rob roe rom roo ror rot rra rrb rrm rrr rrt rta rtb rte rtm rto rtr rtt taa tab tae tam tao tar tat tba tbb tbe tbm tbo tbr tbt te- tea teb tee tem teo ter tet tma tmb tme tmm tmo tmr tmt to- toa tob toe tom too tor tot tra trb tre trm tro trr trt tta ttb tte ttm tto ttr ttt

a-be aaaa aaab aaae aaam aaar aaba aabb aabm aabt aaea aaem aama aamb aame aamo aamr aaoe aaoo aara aare aarm aaro aart aata aatt abaa abab abae abam abar abat abb- abba abbb abbe abbo abbr abbt abee aber abet abma abmb abmt aboa abob aboo abor abot abra abro abta aeer aemt aeom aer- aera aero aeta aeto aetr aett amaa amae amam amar amat amb- amba ambe ambo ambr amee amer amet amm- amma amme ammo amob amoo amor amot amra amro amta amte amto aoba aoma aora aorb aort arab arae aram arar arat arba arbe area aree arem areo aret arma arme armm armo armt aroa arob aroe arom aroo aror arr- arra arre arro arrr arrt arta arte arto artr at-t ataa atab atae atar atat atea atee atem ateo ater atm- atma atme atmo atob atoe atom ator atot atra atre atrm atro atta atte atto attr baaa baam baar baat baba babb babe babm babo babr baer bama bamb bame bamm bar- bara barb bare barm baro barr bart bata bate bato batt bbbb bbeb bbet beam bear beat beba bebb bebe bebo beeb beem beer beet bema beme beo- beor beot bera bere berm bero berr bert beta bete beto bett bmaa boab boar boat boba bobb bobe bobo boea boee boeo boer boet boma bomb bome bomt boob booe boom boor boot bor- bora bore borm boro borr bort bota botb bote boto bott brab brae bram brao brat brea breb bree brem breo brer bret broa brob broe brom broo bror brot brrm brrr btaa btob btor btrt bttb eaba eama eame eaom eara earb eare earo eart eata eate ebam ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eemo eera eero eeta eete emae emam emar emba embe embo embr emer emet emma emme emor emra emre emta emte eora eore eota eoto eram erat erba erbb erbe ereb erem erer eret erma erme ermo erob eroe eroo erra erre erro erta etam etat etbr etee etem eter etoe etra etre etrm etro etta ette etto maaa maam maar maat maba mabe mabo maee maem maeo maer mama mame mamo maor mar- mara mare marm maro marr mart mata mate mato matr matt mbam mbba mbta mear meat mebe mebo meem meer meet mema meme memo memr meor mer- mera merb mere merm mero mert met- meta mete meto mett mmaa mmab mmar mmea mmmm mmor moaa moab moam moar moat moba mobb mobe mobo moea moet moma mome momo mooa moob mooe moor moot mora morb more moro mort mota motb mote motm moto mott mrbb mrbm mreb mree mrta mrtm mrtt mtaa mtab mtbo mtoa mtoe mtom mtor mtre mtrr mttr o-eo oaer oama oara oare oate obba obbo obea ober obet oboe obor obot obra obre obro oeme oera oere oerm oeta omam omao omar ombe ombo omee omeo omer omet omma omo- omoa omoe omoo omor omra omre omro ooaa ooba oobe ooer ooma oome oooo oora oore oort ootb orab orae oram orao orar orat orba orbb orbe orbo ore- orea oreb orem oreo orer orma orme ormo oro- oroe orom oror orot orra orro orta orte orto otar otea otee otem oter otma oto- otoe otoo otor otra otre otro otta otte otto raab raam raat raba rabb rabe rabo raer rama ramb rame ramm ramo raob raom rara rarb rare raro rata rate rato ratt rbbb rbbr rea- reae ream reao rear reat reba rebb rebe rebo reeb reem reet rema reme remo reot rera rere rero rert reta rete reto retr rett roab roam roar roat rob- roba robb robe robo robt roea roer roet roma romb rome romm romo roob room roor root rora rore roro rort rota rote roto rotr rott rrat rrrr rtee