-er a-a a-b a-i a-t aaa aab aae aag aai aar aat ab- aba abb abe abg abi abr abt aea aeb aee aeg aei aer aet ag- aga agb age agg agi agr agt ai- aia aib aie aig aii air ait ar- ara arb are arg ari arr art at- ata atb ate atg ati atr att baa bab bae bag bai bar bat bba bbb bbe bbg bbi bbr bbt be- bea beb bee beg bei ber bet bga bgb bge bgg bgi bgr bgt bi- bia bib bie big bii bir bit bra brb bre brg bri brr brt bta btb bte btg bti btr btt eaa eab eae eag eai ear eat eba ebb ebe ebg ebi ebr ebt eea eeb eee eeg eer eet ega egb ege egg egi egr egt eia eib eie eig eii eir eit era erb ere erg eri err ert eta etb ete etg eti etr ett gaa gab gae gag gai gar gat gba gbe gbg gbi gbr gbt ge- gea geb gee geg gei ger get gga ggb ggg ggi ggr ggt gia gib gie gig gii gir git gra grb gre grg gri grr grt gta gtb gte gtg gti gtr gtt ia- iaa iab iae iag iai iar iat iba ibb ibe ibg ibi ibr ibt ie- iea iee ieg iei ier iet iga igb ige igg igi igr igt iia iib iie iii iir iit ir- ira irb ire irg iri irr irt ita itb ite itg iti itt ra- raa rab rae rag rai rar rat rba rbb rbe rbg rbi rbr rbt re- rea reb ree reg rei rer ret rga rgb rge rgg rgi rgr rgt ria rib rie rig rii rir rit rra rrb rrg rri rrr rrt rta rtb rte rtg rti rtr rtt taa tab tae tag tai tar tat tba tbb tbe tbg tbi tbr tbt te- tea teb tee teg tei ter tet tga tgb tge tgg tgi tgr tgt tia tib tie tig tii tir tit tra trb tre trg tri trr trt tta ttb tte ttg tti ttr ttt

a-be a-ii aaaa aaab aaae aaai aaar aaba aabb aabi aabt aaea aage aaib aaii aara aare aari aart aata aatt abaa abab abae abag abai abar abat abb- abba abbb abbe abbi abbr abbt abee aber abet abia abib abie abig abir abit abra abri abta aebi aeer aega aeit aer- aera aeri aeta aetr aett agag agai agar agat agba agea agee agei ager aget agga agge aggi agia agib agie agig agii agir agit agra agre agri agta agte agtr aiai aiba aiea aiee aiet aiga aiia aiib aiir aira aire airi airt aita aite aiti aitr aitt arab arae arag arai arar arat arba arbe arbi area aree areg arei aret arga argb arge argi aria arib arie arig arii arit arr- arra arre arrg arri arrr arrt arta arte arti artr at-t ataa atab atae atai atar atat atea atee atei ater atia atie atit atra atre atri atta atte atti attr ba-i baaa baar baat baba babb babe babi babr baer baga bage bagg bagi bagt baia baib baie baig bair bait bar- bara barb bare barg bari barr bart bata bate bati batt bbbb bbeb bbet bbga bbrg beag bear beat beba bebb bebe bebi beeb beeg beer beet bega begg begi beia beir beit bera bere berg beri berr bert beta bete beti bett bgia biar biat biba bibb bibe bibi bieb bier biet biga bigb bige bigg bigt bira birb bire birg biri birr birt bita bite bitt brab brae brag brai brat brea breb bree breg brei brer bret bria brie brig brit brrr btaa btie btrt bttb eaba eaga eage eara earb eare eart eata eate eati ebba ebbr eber ebit eeea eeee eega eera eerg eeta eete egaa egae egar egat egba egbe egea egee eger eggb egge eggi egir egra egre egri egta egte eiei eier eige eigg eira eire eita eitb eiti eitr erat erba erbb erbe ereb erei erer eret erg- erga ergg ergi eria erie erit erra erre erta etag etai etat etbr etee eter etra etre etta ette etti gaar gaba gabb gabe gabi gabr gabt gaea gaer gaga gage gagg gagi gaia gaie gaig gair gait gara garb gare garg gari garr gart gata gate gati gatr gatt gbag geab geai gear geat geba gebe gebi geer geet gege gegg geia geie geig geir geit gera gerb gere geri gert geta getb gete getg geti gett ggbt gggg giaa giai giat giba gibb gibe gier giet giga gige gigg gigi gira gire girg giri girr girt gita gite grab grae grai grat grbr grea greb gree greg gret gria grib grie grig grit grrr gtaa gtbr gtea gtta i-be iaaa iaai iaat iaba iaea iaia iara iare iart iata iate iati ibar ibat ibea ibeg ibet ibga ibge ibia ibie ibra ibri ibtb ieat ieet ieie iera iere ieri ieta iett igar igba igea iger iget igga igia igra igri iiie iiii iiit iira iita iitr iitt irae irai irar irbe iree irer iri- iria irie irig irra irre irri irta irte irti itaa itai itar itat itbe itea iter itet itia itie itra itri itta raab raag raat raba rabb rabe rabi raeg raer raga rage ragg ragi raia raie raig raii rair rait rara rarb rare rari rata rate rati ratt rbbb rbbr rea- reae rear reat reba rebb rebe reeb reet rega rege regi regr regt reia reii reir reit rera rere rerg reri rert reta rete reti retr rett rgba rgbe rgbi rgit rgtr riaa riab riai riat rib- riba ribe rier riet riga rige rigg rigi riia rire riri rita rite riti ritt rrat rrrr rtai rtee rtei taa- taag taar taat taba tabb tabe tabi taer taga tage tagg tagi taia taig tair tait tara tarb tare targ tari tarr tart tata tatb tate tati tatr tatt tbar tbit tbrb tbta