-er a-a a-b a-t aaa aab aae aag aam aar aat ab- aba abb abe abg abm abr abt aea aeb aee aeg aem aer aet ag- aga agb age agg agm agr agt ama amb ame amg amm amr amt ar- ara arb are arg arm arr art at- ata atb ate atg atm atr att baa bab bae bag bam bar bat bba bbb bbe bbg bbm bbr bbt be- bea beb bee beg bem ber bet bga bgb bge bgg bgm bgr bgt bma bmb bme bmg bmm bmr bmt bra brb bre brg brm brr brt bta btb bte btg btm btr btt eaa eab eae eag eam ear eat eba ebb ebe ebg ebm ebr ebt eea eeb eee eeg eem eer eet ega egb ege egg egm egr egt em- ema emb eme emg emm emr emt era erb ere erg erm err ert eta etb ete etg etm etr ett gaa gab gae gag gam gar gat gba gbe gbg gbm gbr gbt ge- gea geb gee geg gem ger get gga ggb ggg ggm ggr ggt gma gmb gme gmg gmm gmr gmt gra grb gre grg grm grr grt gta gtb gte gtg gtm gtr gtt m-r maa mab mae mag mam mar mat mba mbb mbe mbg mbm mbr mbt mea meb mee meg mem mer met mga mgb mge mgm mgr mgt mma mmb mme mmg mmm mmr mmt mra mrb mre mrg mrm mrr mrt mta mtb mte mtg mtm mtr mtt ra- raa rab rae rag ram rar rat rba rbb rbe rbg rbm rbr rbt re- rea reb ree reg rem rer ret rga rgb rge rgg rgr rgt rma rmb rme rmg rmm rmr rmt rra rrb rrg rrm rrr rrt rta rtb rte rtg rtm rtr rtt taa tab tae tag tam tar tat tba tbb tbe tbg tbm tbr tbt te- tea teb tee teg tem ter tet tga tgb tge tgg tgm tgr tgt tma tmb tme tmg tmm tmr tmt tra trb tre trg trm trr trt tta ttb tte ttg ttm ttr ttt

a-be aaaa aaab aaae aaam aaar aaba aabb aabm aabt aaea aaem aage aama aamb aame aamr aara aare aarm aart aata aatt abaa abab abae abag abam abar abat abb- abba abbb abbe abbr abbt abee aber abet abma abmb abmt abra abta aeer aega aemt aer- aera aeta aetr aett agag agam agar agat agba agea agee agem ager aget agga agge agma agme agra agre agta agte agtr amaa amae amag amam amar amat amb- amba ambe ambr amee amer amet amga amm- amma amme amra amta amte arab arae arag aram arar arat arba arbe area aree areg arem aret arga argb arge arma arme armm armt arr- arra arre arrg arrr arrt arta arte artr at-t ataa atab atae atar atat atea atee atem ater atgm atm- atma atme atra atre atrm atta atte attr baaa baam baar baat baba babb babe babm babr baer baga bage bagg bagt bama bamb bame bamm bar- bara barb bare barg barm barr bart bata bate batt bbbb bbeb bbet bbga bbgm bbmg bbrg beag beam bear beat beba bebb bebe beeb beeg beem beer beet bega begg bema beme bera bere berg berm berr bert beta bete bett bmaa bmag brab brae brag bram brat brea breb bree breg brem brer bret brrm brrr btaa btrt bttb eaba eaga eage eama eame eara earb eare eart eata eate ebam ebba ebbr eber eeea eeee eega eera eerg eeta eete egaa egae egar egat egba egbe egea egee egem eger eggb egge egma egra egre egta egte emae emag emam emar emba embe embr emer emet emma emme emra emre emta emte eram erat erba erbb erbe ereb erem erer eret erg- erga ergg erma erme erra erre erta etag etam etat etbr etee etem eter etra etre etrm etta ette gaar gaba gabb gabe gabr gabt gaea gaer gaga gage gagg gam- gama gamb game gamm gara garb gare garg garm garr gart gata gate gatm gatr gatt gbag geab gear geat geba gebe geer geet gege gegg gem- gema gemm gemr gera gerb gere germ gert geta getb gete getg gett ggbt gggg gmat gmer gmme gmmr gmta grab grae gram grat grbr grea greb gree greg grem gret grmt grrr gtaa gtbr gtea gtta maaa maag maam maar maat maba mabe maee maem maer maga mage magg mama mame mar- mara mare marg marm marr mart mata mate matr matt mbam mbba mbta meag mear meat mebe meem meer meet meg- mega mege megg megr mema meme memr mer- mera merb mere merm mert met- meta mete mett mgam mger mgga mgmt mgrm mmaa mmab mmar mmea mmmm mrbb mrbm mreb mree mreg mrta mrtm mrtt mtaa mtab mtge mtre mtrr mttr raab raag raam raat raba rabb rabe raeg raer raga rage ragg rama ramb rame ramm rara rarb rare rata rate ratt rbbb rbbr rea- reae ream rear reat reba rebb rebe reeb reem reet rega rege regm regr regt rema reme rera rere rerg rert reta rete retr rett rgba rgbe rgtr rmrg rrat rrrr rtee taa- taag taar taat taba tabb tabe taem taer taga tage tagg tama tame tamm tara tarb tare targ tarm tarr tart tata tatb tate tatr tatt tbar tbrb tbta team tear teat teba teem teer teet tega tegg tegt tema teme ter- tera tere term terr teta tete tetr tett tmaa tmbg tmbr tmge tmtt traa trab trae trag tram trat tre- trea tree treg trem tret trge trma trmb trra trte trtr ttab ttbb tter ttma tttt

-aaa- -tree a-get a-ram aaaam aaaee aaarg aaata aabaa aabba aabga aabra aabtm aamer aamra aaram aarma aatma abaab ababa ababe abaer abaga abara abare abate abbar abbat abbet abeam abear abeat abeba abebe abeer abeet abega abege abegg abera abere aberg aberr abert abgar abram abrar abtaa abtar aeaea aebbe aegae aegea aeger