-er a-a a-b a-i a-t aaa aab aae aaf aai aak aam aao aar aas aat ab- aba abb abe abf abi abk abm abo abr abs abt aea aeb aee aef aei aek aem aeo aer aes aet af- afa afb afe aff afi afk afm afo afr afs aft ai- aia aib aie aif aii aik aim aio air ais ait aka akb ake aki akk akm ako akr aks ama amb ame amf ami amk amm amo amr ams amt aoa aob aoe aof aoi aok aom aoo aor aos aot ar- ara arb are arf ari ark arm aro arr ars art as- asa asb ase asf asi ask asm aso asr ass ast at- ata atb ate atf ati atm ato atr ats att baa bab bae baf bai bak bam bao bar bas bat bba bbb bbe bbf bbi bbk bbm bbo bbr bbs bbt be- bea beb bee bef bei bek bem beo ber bes bet bfa bfb bfe bff bfi bfm bfo bfr bfs bft bi- bia bib bie bif bii bik bim bio bir bis bit bka bkb bke bkf bkk bkm bko bkr bks bkt bma bmb bme bmf bmi bmk bmm bmo bmr bms bmt boa bob boe bof boi bok bom boo bor bos bot bra brb bre brf bri brk brm bro brr brs brt bsa bsb bse bsf bsi bsk bsm bso bsr bss bst bta btb bte btf bti btk btm bto btr bts btt eaa eab eae eaf eai eak eam eao ear eas eat eba ebb ebe ebf ebi ebk ebm ebo ebr ebs ebt eea eeb eee eef eek eem eeo eer ees eet ef- efa efb efe eff efi efm efo efr efs eft eia eib eie eif eii eik eim eio eir eis eit eka ekb eke ekf eki eko ekr eks ekt em- ema emb eme emf emi emk emm emo emr ems emt eo- eoa eob eoe eof eoi eok eom eoo eor eos eot era erb ere erf eri erk erm ero err ers ert es- esa esb ese esf esi esk esm eso esr ess est eta etb ete etf eti etk etm eto etr ets ett faa fab fae faf fai fak fam fao far fas fat fba fbb fbe fbf fbi fbk fbm fbo fbr fbs fbt fea feb fee fef fei fek fem feo fer fes fet ffa ffe fff ffi ffk ffm ffo ffr ffs fft fia fib fie fif fii fik fim fir fis fit fka fkb fkf fki fkk fkm fkt fma fmb fme fmf fmi fmm fmo fmr fms fmt foa fob foe fof foi fok fom foo for fos fot fra frb fre frf fri frk frm fro frr frs frt fsa fsb fse fsf fsi fsk fsm fso fsr fss fst fta ftb fte ftf fti ftk ftm fto ftr fts ftt i-f ia- iaa iab iae iaf iai iam iao iar ias iat iba ibb ibe ibf ibi ibk ibm ibo ibr ibs ibt ie- iea iee ief iei iek iem ier ies iet ifa ifb ife iff ifi ifm ifo ifr ifs ift iia iib iie iif iii iim iio iir iis iit ika ikb ike ikf iki ikk iko ikr iks ikt im- ima imb ime imf imi imm imo ims imt io- ioa iob ioe iof ioi iom ioo ior ios iot ir- ira irb ire irf iri irk irm iro irr irs irt is- isa isb ise isf isi isk ism iso isr iss ist ita itb ite itf iti itk itm ito its itt k-t ka- kaa kab kae kaf kai kak kam kao kar kas kat kba kbb kbe kbf kbi kbk kbm kbo kbr kbs ke- kea keb kee kef kei kek kem keo ker kes ket kfa kff kfi kfm kfo kfs kia kib kie kif kii kik kim kio kir kis kit kkb kke kki kkk kkm kkr kks kkt kma kmb kme kmf kmi kmk kmm kmo kms kmt koa kob koe kof koi kok kom koo kor kos kot kra krf kri krk kro krr krs krt ksa ksb kse ksf ksi ksk ksm kso ksr kss kst kta ktb kte ktf ktk ktm kto ktr kts ktt m-f m-o m-r maa mab mae maf mai mak mam mao mar mas mat mba mbb mbe mbf mbi mbk mbm mbo mbr mbs mbt mea meb mee mef mei mek mem meo mer mes met mfa mfb mfe mff mfi mfm mfo mfr mfs mft mi- mia mib mie mif mii mik mim mio mir mis mit mka mkb mke mkk mkm mko mkr mks mkt mma mmb mme mmf mmi mmk mmm mmo mmr mms mmt moa mob moe mof moi mok mom moo mor mos mot mra mrb mre mrf mri mrk mrm mro mrr mrs mrt msa msb mse msf msi msk msm mso msr mss mst mta mtb mte mtf mti mtk mtm mto mtr mts mtt o-i oaa oab oae oaf oai oak oam oao oar oas oat ob- oba obb obe obf obi obk obm obo obr obs obt oea oeb oee oef oei oem oeo oer oes oet of- ofa ofb ofe off ofi ofm ofo ofr ofs oft oia oib oie oif oii oik oim oio oir ois oit oka okb oke oki okk oko okr oks om- oma omb ome omf omi omm omo omr oms omt oo- ooa oob oof ooi ook oom ooo oor oos oot or- ora orb ore orf ori ork orm oro orr ors ort os- osa osb ose osf osi osk osm oso osr oss ost ot- ota otb ote otf oti otk otm oto otr ots ott ra- raa rab rae raf rai rak ram rao rar ras rat rba rbb rbe rbf rbi rbk rbm rbo rbr rbs rbt re- rea reb ree ref rei rek rem reo rer res ret rfa rfb rfe rff rfi rfk rfm rfo