-er a-a a-b a-i a-t aaa aab aae aag aai aak aam aao aar aas aat ab- aba abb abe abg abi abk abm abo abr abs abt aea aeb aee aeg aei aek aem aeo aer aes aet ag- aga agb age agg agi agk agm ago agr ags agt ai- aia aib aie aig aii aik aim aio air ais ait aka akb ake akg aki akk akm ako akr aks ama amb ame amg ami amk amm amo amr ams amt aoa aob aoe aog aoi aok aom aoo aor aos aot ar- ara arb are arg ari ark arm aro arr ars art as- asa asb ase asg asi ask asm aso asr ass ast at- ata atb ate atg ati atm ato atr ats att baa bab bae bag bai bak bam bao bar bas bat bba bbb bbe bbg bbi bbk bbm bbo bbr bbs bbt be- bea beb bee beg bei bek bem beo ber bes bet bga bgb bge bgg bgi bgk bgm bgo bgr bgs bgt bi- bia bib bie big bii bik bim bio bir bis bit bka bkb bke bkg bkk bkm bko bkr bks bkt bma bmb bme bmg bmi bmk bmm bmo bmr bms bmt boa bob boe bog boi bok bom boo bor bos bot bra brb bre brg bri brk brm bro brr brs brt bsa bsb bse bsg bsi bsk bsm bso bsr bss bst bta btb bte btg bti btk btm bto btr bts btt eaa eab eae eag eai eak eam eao ear eas eat eba ebb ebe ebg ebi ebk ebm ebo ebr ebs ebt eea eeb eee eeg eek eem eeo eer ees eet ega egb ege egg egi egm ego egr egs egt eia eib eie eig eii eik eim eio eir eis eit eka ekb eke ekg eki eko ekr eks ekt em- ema emb eme emg emi emk emm emo emr ems emt eo- eoa eob eoe eog eoi eok eom eoo eor eos eot era erb ere erg eri erk erm ero err ers ert es- esa esb ese esg esi esk esm eso esr ess est eta etb ete etg eti etk etm eto etr ets ett gaa gab gae gag gai gak gam gao gar gas gat gba gbe gbg gbi gbk gbm gbo gbr gbs gbt ge- gea geb gee geg gei gek gem geo ger ges get gga ggb ggg ggi ggm ggo ggr ggs ggt gia gib gie gig gii gik gim gio gir gis git gka gkb gkm gko gks gkt gma gmb gme gmg gmi gmm gmo gmr gms gmt goa gob goe gog goi gok gom goo gor gos got gra grb gre grg gri grk grm gro grr grs grt gsa gsb gse gsg gsi gsk gsm gso gsr gss gst gta gtb gte gtg gti gtk gtm gto gtr gts gtt ia- iaa iab iae iag iai iam iao iar ias iat iba ibb ibe ibg ibi ibk ibm ibo ibr ibs ibt ie- iea iee ieg iei iek iem ier ies iet iga igb ige igg igi igk igm igo igr igs igt iia iib iie iii iim iio iir iis iit ika ikb ike iki ikk iko ikr iks ikt im- ima imb ime img imi imm imo ims imt io- ioa iob ioe iog ioi iom ioo ior ios iot ir- ira irb ire irg iri irk irm iro irr irs irt is- isa isb ise isg isi isk ism iso isr iss ist ita itb ite itg iti itk itm ito its itt k-t ka- kaa kab kae kag kai kak kam kao kar kas kat kba kbb kbe kbi kbk kbm kbo kbr kbs ke- kea keb kee keg kei kek kem keo ker kes ket kga kgb kgi kgm kgo kgs kia kib kie kig kii kik kim kio kir kis kit kkb kke kki kkk kkm kkr kks kkt kma kmb kme kmg kmi kmk kmm kmo kms kmt koa kob koe kog koi kok kom koo kor kos kot kra krg kri krk kro krr krs krt ksa ksb kse ksg ksi ksk ksm kso ksr kss kst kta ktb kte ktg ktk ktm kto ktr kts ktt m-o m-r maa mab mae mag mai mak mam mao mar mas mat mba mbb mbe mbg mbi mbk mbm mbo mbr mbs mbt mea meb mee meg mei mek mem meo mer mes met mga mgb mge mgi mgk mgm mgo mgr mgs mgt mi- mia mib mie mig mii mik mim mio mir mis mit mka mkb mke mkg mkk mkm mko mkr mks mkt mma mmb mme mmg mmi mmk mmm mmo mmr mms mmt moa mob moe mog moi mok mom moo mor mos mot mra mrb mre mrg mri mrk mrm mro mrr mrs mrt msa msb mse msg msi msk msm mso msr mss mst mta mtb mte mtg mti mtk mtm mto mtr mts mtt o-i oaa oab oae oag oai oak oam oao oar oas oat ob- oba obb obe obg obi obk obm obo obr obs obt oea oeb oee oeg oei oem oeo oer oes oet oga oge ogg ogi ogo ogs ogt oia oib oie oii oik oim oio oir ois oit oka okb oke okg oki okk oko okr oks om- oma omb ome omg omi omm omo omr oms omt oo- ooa oob oog ooi ook oom ooo oor oos oot or- ora orb ore org ori ork orm oro orr ors ort os- osa osb ose osg osi osk osm oso osr oss ost ot- ota otb ote otg oti otk otm oto otr ots ott ra- raa rab rae rag rai rak ram rao rar ras rat rba rbb rbe rbg rbi rbk rbm rbo rbr rbs rbt re- rea reb ree reg rei rek rem reo rer res ret rga rgb rge rgg rgi rgk rgo rgr rgs rgt ria rib rie rig rii