-er a-a a-b a-i aaa aab aae aag aai aak aar ab- aba abb abe abg abi abk abr aea aeb aee aeg aei aek aer ag- aga agb age agg agi agk agr ai- aia aib aie aig aii aik air aka akb ake akg aki akk akr ar- ara arb are arg ari ark arr baa bab bae bag bai bak bar bba bbb bbe bbg bbi bbk bbr be- bea beb bee beg bei bek ber bga bgb bge bgg bgi bgk bgr bi- bia bib bie big bii bik bir bka bkb bke bkg bkk bkr bra brb bre brg bri brk brr eaa eab eae eag eai eak ear eba ebb ebe ebg ebi ebk ebr eea eeb eee eeg eek eer ega egb ege egg egi egr eia eib eie eig eii eik eir eka ekb eke ekg eki ekr era erb ere erg eri erk err gaa gab gae gag gai gak gar gba gbe gbg gbi gbk gbr ge- gea geb gee geg gei gek ger gga ggb ggg ggi ggr gia gib gie gig gii gik gir gka gkb gra grb gre grg gri grk grr ia- iaa iab iae iag iai iar iba ibb ibe ibg ibi ibk ibr ie- iea iee ieg iei iek ier iga igb ige igg igi igk igr iia iib iie iii iir ika ikb ike iki ikk ikr ir- ira irb ire irg iri irk irr ka- kaa kab kae kag kai kak kar kba kbb kbe kbi kbk kbr ke- kea keb kee keg kei kek ker kga kgb kgi kia kib kie kig kii kik kir kkb kke kki kkk kkr kra krg kri krk krr ra- raa rab rae rag rai rak rar rba rbb rbe rbg rbi rbk rbr re- rea reb ree reg rei rek rer rga rgb rge rgg rgi rgk rgr ria rib rie rig rii rik rir rkb rke rkg rkk rra rrb rrg rri rrk rrr

a-ak a-be a-ii aaaa aaab aaae aaai aaar aaba aabb aabi aaea aage aaib aaii aaka aake aara aare aari abaa abab abae abag abai abak abar abb- abba abbb abbe abbi abbr abee aber abia abib abie abig abir abra abri aebi aeer aega aeka aer- aera aeri agag agai agar agba agea agee agei ager agga agge aggi agia agib agie agig agii agir agra agre agri aiai aiba aiea aiee aiga aiia aiib aiir aika aike aiki aira aire airi akaa akae akai akar akee akeg aker akia akie akik akir akka akki akr- akra akre arab arae arag arai arak arar arba arbe arbi area aree areg arei arek arga argb arge argi aria arib arie arig arii arik arka arke arki arr- arra arre arrg arri arrk arrr ba-i baaa baak baar baba babb babe babi babr baek baer baga bage bagg bagi baia baib baie baig baik bair bak- baka bake baki bakr bar- bara barb bare barg bari bark barr bbbb bbeb bbga bbrg beag beak bear beba bebb bebe bebi beeb beeg beek beer bega begg begi beia beik beir beka beke beki bera bere berg beri berk berr bgia biak biar biba bibb bibe bibi bieb bier biga bigb bige bigg bike bira birb bire birg biri birk birr brab brae brag brai brak brea breb bree breg brei brek brer bria brie brig brik brka brkb brrr eaba eaga eage eara earb eare ebba ebbr eber eeea eeee eega eeka eeke eera eerg egaa egae egar egba egbe egea egee eger eggb egge eggi egir egra egre egri eiei eier eige eigg eika eike eiki eira eire eka- ekab ekeb ekek eker ekka ekki erba erbb erbe ereb erei erer erg- erga ergg ergi eria erie erik erke erki erra erre gaar gaba gabb gabe gabi gabr gaea gaer gaga gage gagg gagi gaia gaie gaig gair gaki gara garb gare garg gari garr gbag geab geai gear geba gebe gebi geek geer gege gegg geia geie geig geir geki gera gerb gere geri gggg giaa giai giba gibb gibe gier giga gige gigg gigi gira gire girg giri girk girr grab grae grai grbr grea greb gree greg gria grib grie grig grrr i-be iaaa iaai iaba iaea iaia iara iare ibar ibea ibeg ibga ibge ibia ibie ibra ibri ieie iera iere ieri igar igba igea iger igga igia igra igri iiie iiii iira ikar ikea ikee iker ikig ikki ikra ikri irae irai irak irar irbe iree irer iri- iria irie irig irka irki irra irre irri kaaa kaab kaag kaai kaak kaar kaba kabb kabe kabg kabi kabr kaei kaer kag- kaga kagb kage kagg kagi kagr kaia kaib kaie kaig kaii kaik kair kaka kake kaki kakk kara karb kare karg kari kark karr kbaa kbab kbae kbai kbak kbar kbba kbbb kbbe kbbg kbbi kbbk kbbr kbeb kbee kbek kber kbga kbgb kbge kbgg kbgr kbia kbib kbie kbig kbik kbkb kbkg kbkk kbkr kbra kbrb kbre kbrg kbri kbrk kea- keag keak kear keba kebb kebe kebi kebr keek keer kega kege kegg kegi kegk kegr keib keig keii keik keir keka kekb keke keki ker- kera kerb kere keri kerk kerr kgab kgak kgba kgbb kgbr kgeb kgga kggg kggi kggr kgia kgir kgra kgrb kgre kgrg kgri kgrk kgrr kiab kiai kiar kiba kibb kibe kibg kibi kibr kier kiga kiia kiii kiik kika kiki kikk kikr kira kirb kiri kirk kirr kkaa kkag kkai kkar kkba kkbb kkbe kkbg kkbi kkbr kkea kkeg kkgb kkgr kkia kkik kkkk kkrb kkre kkrk kkrr krab krae krag krai krak krar krba krbb krbe krbg krbi krbk krbr krea kreb kree krei krek krgi kria krib krik krka krke krki krkk krkr krrb krre krrg krri krrk krrr raab raag raak raba rabb rabe rabi rabk raeg raer raga rage ragg ragi raia raie raig raii raik rair raka rake raki rakk rara rarb rare rari rark rbbb rbbr rea- reae reak