-er a-a a-b a-i a-t aaa aab aae aaf aag aai aar aat ab- aba abb abe abf abg abi abr abt aea aeb aee aef aeg aei aer aet af- afa afb afe aff afg afi afr aft ag- aga agb age agf agg agi agr agt ai- aia aib aie aif aig aii air ait ar- ara arb are arf arg ari arr art at- ata atb ate atf atg ati atr att baa bab bae baf bag bai bar bat bba bbb bbe bbf bbg bbi bbr bbt be- bea beb bee bef beg bei ber bet bfa bfb bfe bff bfg bfi bfr bft bga bgb bge bgf bgg bgi bgr bgt bi- bia bib bie bif big bii bir bit bra brb bre brf brg bri brr brt bta btb bte btf btg bti btr btt eaa eab eae eaf eag eai ear eat eba ebb ebe ebf ebg ebi ebr ebt eea eeb eee eef eeg eer eet ef- efa efb efe eff efg efi efr eft ega egb ege egf egg egi egr egt eia eib eie eif eig eii eir eit era erb ere erf erg eri err ert eta etb ete etf etg eti etr ett faa fab fae faf fag fai far fat fba fbb fbe fbf fbg fbi fbr fbt fea feb fee fef feg fei fer fet ffa ffe fff ffg ffi ffr fft fga fgb fge fgf fgg fgi fgr fgt fia fib fie fif fig fii fir fit fra frb fre frf frg fri frr frt fta ftb fte ftf ftg fti ftr ftt gaa gab gae gaf gag gai gar gat gba gbe gbf gbg gbi gbr gbt ge- gea geb gee gef geg gei ger get gfa gfb gfe gff gfi gfr gft gga ggb ggg ggi ggr ggt gia gib gie gif gig gii gir git gra grb gre grf grg gri grr grt gta gtb gte gtf gtg gti gtr gtt i-f ia- iaa iab iae iaf iag iai iar iat iba ibb ibe ibf ibg ibi ibr ibt ie- iea iee ief ieg iei ier iet ifa ifb ife iff ifg ifi ifr ift iga igb ige igf igg igi igr igt iia iib iie iif iii iir iit ir- ira irb ire irf irg iri irr irt ita itb ite itf itg iti itt ra- raa rab rae raf rag rai rar rat rba rbb rbe rbf rbg rbi rbr rbt re- rea reb ree ref reg rei rer ret rfa rfb rfe rff rfg rfi rfr rft rga rgb rge rgf rgg rgi rgr rgt ria rib rie rif rig rii rir rit rra rrb rrf rrg rri rrr rrt rta rtb rte rtf rtg rti rtr rtt taa tab tae taf tag tai tar tat tba tbb tbe tbf tbg tbi tbr tbt te- tea teb tee tef teg tei ter tet tfa tfb tfe tff tfg tfi tfr tft tga tgb tge tgf tgg tgi tgr tgt tia tib tie tif tig tii tir tit tra trb tre trf trg tri trr trt tta ttb tte ttf ttg tti ttr ttt

a-be a-ii aaaa aaab aaae aaaf aaai aaar aaba aabb aabi aabt aaea aafa aafb aaff aafi aage aaib aaii aara aare aari aart aata aatf aatt abaa abab abae abaf abag abai abar abat abb- abba abbb abbe abbi abbr abbt abee aber abet abff abia abib abie abig abir abit abra abri abta aeaf aebi aeer aega aeit aer- aera aeri aeta aetf aetr aett afaa afar afat afee afer afet affa affi afft afgf afia afib afif afig afir afit afr- afra afre afri afta afte agag agai agar agat agba agea agee agei ager aget agfa agga agge aggi agia agib agie agig agii agir agit agra agre agri agta agte agtr aiai aiba aiea aiee aiet aiff aiga aiia aiib aiir aira aire airi airt aita aite aitf aiti aitr aitt arab arae araf arag arai arar arat arba arbe arbi area aree aref areg arei aret arfa arfb arff arft arga argb arge argi aria arib arie arif arig arii arit arr- arra arre arrg arri arrr arrt arta arte arti artr at-t ataa atab atae atai atar atat atea atee atef atei ater atfb atfe atia atie atif atit atra atre atri atta atte atti attr ba-i baaa baaf baar baat baba babb babe babi babr baer baff baft baga bage bagg bagi bagt baia baib baie baig bair bait bar- bara barb bare barf barg bari barr bart bata bate batf bati batt bbbb bbeb bbet bbga bbrg beaf beag bear beat beba bebb bebe bebi beeb beef beeg beer beet befa befe beff beft bega begg begi beia beir beit bera bere berg beri berr bert beta bete beti bett bfgf bfta bftt bgia biaf biar biat biba bibb bibe bibi bieb bief bier biet bifa biff bifi biga bigb bige bigg bigt bira birb bire birg biri birr birt bita bite bitt brab brae braf brag brai brat brea breb bree bref breg brei brer bret bria brie brig brit brrr btaa btaf btie btrt bttb eaaf eaba eafb eaga eage eaif eara earb eare eart eata eate eati ebba ebbr eber ebit eeea eeee eefa eefe eega eera eerg eeta eete ef-g efab efbr efet effa effi efit eft- efta egaa egae egar egat egba egbe egea egee eger egfr eggb egge eggi egir egra egre egri egta egte eiei eier eige eigg eira eire eita eitb eiti eitr eraf erat erba erbb erbe ereb erei erer eret erft erg- erga ergg ergi eria erie erit erra erre erta etag etai etat etbr etee eter etfa etfb etfe etra etre etta ette etti faaa faba fabe fabi faeb fafa fafe faff fafg fafi fage fagg fagi faie fair fait fara farb fare farg farr fart fata fate fatf fati fatt fbar feaf fear feat feba feeb feer feet fefe feff fefi fege fegg feia feie