-er a-a a-b a-i a-t aaa aab aae aag aai aak aar aas aat ab- aba abb abe abg abi abk abr abs abt aea aeb aee aeg aei aek aer aes aet ag- aga agb age agg agi agk agr ags agt ai- aia aib aie aig aii aik air ais ait aka akb ake akg aki akk akr aks ar- ara arb are arg ari ark arr ars art as- asa asb ase asg asi ask asr ass ast at- ata atb ate atg ati atr ats att baa bab bae bag bai bak bar bas bat bba bbb bbe bbg bbi bbk bbr bbs bbt be- bea beb bee beg bei bek ber bes bet bga bgb bge bgg bgi bgk bgr bgs bgt bi- bia bib bie big bii bik bir bis bit bka bkb bke bkg bkk bkr bks bkt bra brb bre brg bri brk brr brs brt bsa bsb bse bsg bsi bsk bsr bss bst bta btb bte btg bti btk btr bts btt eaa eab eae eag eai eak ear eas eat eba ebb ebe ebg ebi ebk ebr ebs ebt eea eeb eee eeg eek eer ees eet ega egb ege egg egi egr egs egt eia eib eie eig eii eik eir eis eit eka ekb eke ekg eki ekr eks ekt era erb ere erg eri erk err ers ert es- esa esb ese esg esi esk esr ess est eta etb ete etg eti etk etr ets ett gaa gab gae gag gai gak gar gas gat gba gbe gbg gbi gbk gbr gbs gbt ge- gea geb gee geg gei gek ger ges get gga ggb ggg ggi ggr ggs ggt gia gib gie gig gii gik gir gis git gka gkb gks gkt gra grb gre grg gri grk grr grs grt gsa gsb gse gsg gsi gsk gsr gss gst gta gtb gte gtg gti gtk gtr gts gtt ia- iaa iab iae iag iai iar ias iat iba ibb ibe ibg ibi ibk ibr ibs ibt ie- iea iee ieg iei iek ier ies iet iga igb ige igg igi igk igr igs igt iia iib iie iii iir iis iit ika ikb ike iki ikk ikr iks ikt ir- ira irb ire irg iri irk irr irs irt is- isa isb ise isg isi isk isr iss ist ita itb ite itg iti itk its itt k-t ka- kaa kab kae kag kai kak kar kas kat kba kbb kbe kbi kbk kbr kbs ke- kea keb kee keg kei kek ker kes ket kga kgb kgi kgs kia kib kie kig kii kik kir kis kit kkb kke kki kkk kkr kks kkt kra krg kri krk krr krs krt ksa ksb kse ksg ksi ksk ksr kss kst kta ktb kte ktg ktk ktr kts ktt ra- raa rab rae rag rai rak rar ras rat rba rbb rbe rbg rbi rbk rbr rbs rbt re- rea reb ree reg rei rek rer res ret rga rgb rge rgg rgi rgk rgr rgs rgt ria rib rie rig rii rik rir ris rit rkb rke rkg rkk rks rkt rra rrb rrg rri rrk rrr rrs rrt rsa rsb rse rsg rsi rsk rsr rss rst rta rtb rte rtg rti rtk rtr rts rtt saa sab sae sag sai sak sar sas sat sba sbb sbe sbg sbi sbk sbr sbs sbt se- sea seb see seg sei sek ser ses set sga sgb sge sgg sgi sgk sgr sgs sgt sia sib sie sig sii sik sir sis sit sk- ska skb ske skg ski skk skr sks skt sr- sra srb sre srg sri srk srr srs srt ss- ssa ssb sse ssg ssi ssk ssr sss sst sta stb ste stg sti stk str sts stt taa tab tae tag tai tak tar tas tat tba tbb tbe tbg tbi tbk tbr tbs tbt te- tea teb tee teg tei tek ter tes tet tga tgb tge tgg tgi tgk tgr tgs tgt tia tib tie tig tii tik tir tis tit tka tkb tke tkg tkk tkr tks tkt tra trb tre trg tri trk trr trs trt tsa tsb tse tsg tsi tsk tsr tss tst tta ttb tte ttg tti ttk ttr tts ttt

-ase a-ak a-be a-ii aaaa aaab aaae aaai aaar aaas aaba aabb aabi aabt aaea aaes aage aaib aaii aais aaka aake aara aare aari aars aart aasa aase aasi aass aast aata aatk aatt abaa abab abae abag abai abak abar abas abat abb- abba abbb abbe abbi abbr abbs abbt abee aber abes abet abia abib abie abig abir abis abit abra abri abrs abs- absa abse absi abss abta abts aeas aebi aebs aeer aega aeit aeka aer- aera aeri aers aess aest aeta aetr aett agag agai agar agas agat agba agea agee agei ager ages aget agga agge aggi agia agib agie agig agii agir agis agit agra agre agri agsa agsg agst agta agte agtr agts aiai aias aiba aiea aiee aiet aiga aiia aiib aiir aika aike aiki aiks aira aire airi airs airt aisa aisb aise aisg aisi aisk aisr aist aita aite aiti aitr aits aitt akaa akae akai akar akas akee akeg aker akes akia akie akik akir akis akka akki akr- akra akre aksa aksi akst akte arab arae arag arai arak arar aras arat arba arbe arbi arbs area aree areg arei arek ares aret arga argb arge argi args aria arib arie arig arii arik aris arit arka arke arki arks arr- arra arre arrg arri arrk arrr arrs arrt ars- arsa arse arsi arsk arst arta arte arti artr arts asaa asab asae asag asai asak asar asas asat asba asea asee asek aser ases aset asge asgt asia asie asii asik asir asis asit aska aske aski askr asks askt asra asrg asrs assa asse assi assk assr asss asst asta astb aste asti