-er a-a a-b a-t aaa aab aad aae aag aar aat ab- aba abb abd abe abg abr abt ad- ada adb add ade adg adr adt aea aeb aed aee aeg aer aet ag- aga agb agd age agg agr agt ar- ara arb ard are arg arr art at- ata atb atd ate atg atr att baa bab bad bae bag bar bat bba bbb bbd bbe bbg bbr bbt bda bdb bdd bde bdg bdr bdt be- bea beb bed bee beg ber bet bga bgb bgd bge bgg bgr bgt bra brb brd bre brg brr brt bta btb btd bte btg btr btt daa dab dad dae dag dar dat dba dbb dbd dbe dbg dbr dbt dda ddb ddd dde ddg ddr ddt de- dea deb ded dee deg der det dga dgd dge dgg dgr dgt dra drb drd dre drg drr drt dta dtb dtd dte dtg dtr dtt eaa eab ead eae eag ear eat eba ebb ebd ebe ebg ebr ebt ed- eda edb edd ede edg edr edt eea eeb eed eee eeg eer eet ega egb egd ege egg egr egt era erb erd ere erg err ert eta etb etd ete etg etr ett g-d gaa gab gad gae gag gar gat gba gbd gbe gbg gbr gbt gda gdb gdd gde gdr gdt ge- gea geb ged gee geg ger get gga ggb ggd ggg ggr ggt gra grb grd gre grg grr grt gta gtb gtd gte gtg gtr gtt ra- raa rab rad rae rag rar rat rba rbb rbd rbe rbg rbr rbt rda rdb rdd rde rdg rdr rdt re- rea reb red ree reg rer ret rga rgb rgd rge rgg rgr rgt rra rrb rrd rrg rrr rrt rta rtb rtd rte rtg rtr rtt taa tab tad tae tag tar tat tba tbb tbd tbe tbg tbr tbt tda tdb tdd tde tdg tdr tdt te- tea teb ted tee teg ter tet tga tgb tge tgg tgr tgt tra trb trd tre trg trr trt tta ttb ttd tte ttg ttr ttt

a-be aaaa aaab aaad aaae aaar aaba aabb aabd aabt aada aade aadt aaea aage aara aard aare aart aata aatt abaa abab abad abae abag abar abat abb- abba abbb abbe abbr abbt abda abed abee aber abet abgd abra abta adaa adab adad adae adag adar adat adba adda addd adde addr adea adeb adee ader adet adra adre adta aede aedt aeer aega aer- aera aerd aeta aetr aett agad agag agar agat agba agda agde agea aged agee ager aget agga agge agra agre agta agte agtr arab arad arae arag arar arat arba arbe arda arde area ared aree areg aret arga argb arge arr- arra arre arrg arrr arrt arta arte artr at-t ataa atab atad atae atar atat atdt atea ated atee ater atra atre atta atte attr baaa baad baar baat baba babb babe babr bada badb badd bade badr baed baer baga bage bagg bagt bar- bara barb bard bare barg barr bart bata bate batt bbad bbbb bbdd bbeb bbet bbga bbrg bd-r bead beag bear beat beba bebb bebe beda bede beeb beed beeg beer beet bega begg bera berd bere berg berr bert beta bete bett brab brad brae brag brat brda brdt brea breb bred bree breg brer bret brrr btaa btdt btrt bttb daab daad daae daag daar daba dabb dabt dada dade daeb daer daga dage dagg dagr dara darb dard dare darg darr dart data date datr datt dbag dbar dbtt dddd ddre dead deae dear deba debe debt deda dedd dede deeb deed deeg deer deet dega dege der- dera derb dere derg derr deta dete detr dgeg dgge draa drab drad drag drar drat drba drda drea dred dree dreg dret drge drra dtaa dted eaba eada eadb eadd eaga eage eara earb eard eare eart eata eate ebba ebbr ebed eber edad edag edar edda edde ede- edea eder edge edra edta eede eeea eeee eega eera eerg eeta eete egaa egad egae egar egat egba egbe egea egee eger eggb egge egra egre egta egte erad erat erba erbb erbe erda erde ereb ered erer eret erg- erga ergg erra erre erta etag etat etbr etee eter etra etre etta ette gaar gaba gabb gabe gabr gabt gada gadd gade gaea gaed gaer gaga gage gagg gara garb gard gare garg garr gart gata gate gatr gatt gbag gbde gddb gdrt geab gead gear geat geba gebe geda gedd gede geed geer geet gege gegg gera gerb gerd gere gert geta getb gete getg gett ggbt gggg grab grad grae grat grbr grea greb gree greg gret grrr gtaa gtbr gtea gtta raab raad raag raat raba rabb rabe rada radd rade radr radt raed raeg raer raga rage ragg rara rarb rare rata rate ratt rbbb rbbr rder rea- read reae rear reat reba rebb rebe reda redd rede redr reeb reed reet rega regd rege regr regt rera rerd rere rerg rert reta retd rete retr rett rgba rgbe rgtr rrad rrat rred rrrr rtdt rtee taa- taag taar taat taba tabb tabe tada tade tadg taer taga tage tagg tara tarb tard tare targ tarr tart tata tatb tate tatr tatt tbar tbrb tbta tddb tdra tead tear teat teba teda tedd tede teed teer teet tega tegg tegt ter- tera tere terr teta tete tetr tett traa trab trad trae trag trat tre- trea tred tree treg tret trge trra trte trtr ttab ttbb tter tttt

-aaa- -abad -drag -tree a-get aaaee aaarg aaata aabaa aabba aabga aabra aadat abaab ababa ababe abada abade abaer abaga abara abare abate abbad abbar abbat abbed abbet abdet abead abear abeat abeba abebe abede abeed abeer abeet abega abege abegg abera abere aberg aberr abert abgar abrad abrar abtaa abtar adaba adabe adada adage adara adare adata adate adber addae addea added adder addra adead