-er a-a a-b a-c a-t aaa aab aac aae aaf aam aan aao aar aas aat aau ab- aba abb abc abe abf abm abn abo abr abs abt abu ac- aca acb acc ace acf acm acn aco acr acs act acu aea aeb aec aee aef aem aen aeo aer aes aet aeu af- afa afb afc afe aff afm afn afo afr afs aft afu ama amb amc ame amf amm amn amo amr ams amt amu an- ana anb anc ane anf anm ann ano anr ans ant anu aoa aob aoc aoe aof aom aon aoo aor aos aot aou ar- ara arb arc are arf arm arn aro arr ars art aru as- asa asb asc ase asf asm asn aso asr ass ast asu at- ata atb atc ate atf atm atn ato atr ats att atu au- aua aub auc aue auf aum aun auo aur aus aut b-u baa bab bac bae baf bam ban bao bar bas bat bau bba bbb bbc bbe bbf bbm bbn bbo bbr bbs bbt bbu bca bcb bcc bce bcf bcm bcn bco bcr bcs bct bcu be- bea beb bec bee bef bem ben beo ber bes bet beu bfa bfb bfc bfe bff bfm bfn bfo bfr bfs bft bfu bma bmb bmc bme bmf bmm bmn bmo bmr bms bmt bmu bna bnb bnc bne bnf bnn bno bnr bns bnt bnu boa bob boc boe bof bom bon boo bor bos bot bou bra brb bre brf brm brn bro brr brs brt bru bsa bsb bsc bse bsf bsm bsn bso bsr bss bst bsu bta btb btc bte btf btm btn bto btr bts btt btu bua bub buc bue buf bum bun buo bur bus but buu c-- caa cab cac cae caf cam can cao car cas cat cau cba cbb cbc cbe cbf cbm cbn cbo cbr cbs cbt cbu cca ccb ccc cce ccf ccm ccn cco ccr ccs cct ccu ce- cea ceb cec cee cef cem cen ceo cer ces cet ceu cfa cfb cfc cfe cff cfm cfn cfo cfr cfs cft cfu cma cmb cmc cme cmf cmm cmn cmo cmr cms cmt cmu cn- cna cnb cnc cne cnf cnm cnn cno cnr cns cnt cnu co- coa cob coc coe cof com con coo cor cos cot cou cra crb crc cre crf crm crn cro crr crs crt cru csa csb csc cse csf csm csn cso csr css cst csu cta ctb ctc cte ctf ctm ctn cto ctr cts ctt ctu cua cub cuc cue cuf cum cun cuo cur cus cut cuu eaa eab eac eae eaf eam ean eao ear eas eat eau eba ebb ebc ebe ebf ebm ebn ebo ebr ebs ebt ebu ec- eca ecb ecc ece ecf ecm ecn eco ecr ecs ect ecu eea eeb eec eee eef eem een eeo eer ees eet ef- efa efb efc efe eff efm efo efr efs eft em- ema emb emc eme emf emm emn emo emr ems emt emu en- ena enb enc ene enf enm enn eno enr ens ent enu eo- eoa eob eoc eoe eof eom eon eoo eor eos eot eou era erb erc ere erf erm ern ero err ers ert eru es- esa esb esc ese esf esm esn eso esr ess est esu eta etb etc ete etf etm etn eto etr ets ett etu eu- eua eub euc eue euf eun eur eus eut faa fab fac fae faf fam fan fao far fas fat fau fba fbb fbc fbe fbf fbm fbn fbo fbr fbs fbt fbu fca fcb fcc fce fcf fcm fcn fco fcr fcs fct fcu fea feb fec fee fef fem fen feo fer fes fet feu ffa ffc ffe fff ffm ffn ffo ffr ffs fft ffu fma fmb fmc fme fmf fmm fmn fmo fmr fms fmt fmu fna fnb fnc fne fnf fnm fnn fnr fns fnt fnu foa fob foc foe fof fom fon foo for fos fot fou fra frb frc fre frf frm frn fro frr frs frt fru fsa fsb fsc fse fsf fsm fsn fso fsr fss fst fsu fta ftb ftc fte ftf ftm ftn fto ftr fts ftt ftu fua fub fue fuf fum fun fuo fur fus fut fuu m-f m-o m-r maa mab mac mae maf mam man mao mar mas mat mau mba mbb mbc mbe mbf mbm mbo mbr mbs mbt mbu mc- mca mcb mcc mce mcf mcm mcn mco mcr mcs mct mcu mea meb mec mee mef mem men meo mer mes met meu mfa mfb mfc mfe mff mfm mfn mfo mfr mfs mft mfu mma mmb mmc mme mmf mmm mmn mmo mmr mms mmt mmu mna mnb mnc mne mnf mnm mnn mno mnr mns mnt mnu moa mob moc moe mof mom mon moo mor mos mot mou mra mrb mrc mre mrf mrm mrn mro mrr mrs mrt mru msa msb msc mse msf msm msn mso msr mss mst msu mta mtb mtc mte mtf mtm mtn mto mtr mts mtt mtu mua mub muc mue muf mum mun mur mus mut muu naa nab nac nae naf nam nan nao nar nas nat nau nba nbb nbc nbe nbf nbm nbn nbo nbr nbs nbt nbu nca ncb ncc nce ncf ncm ncn nco ncr ncs nct ncu ne- nea neb nec nee nef nem nen neo ner nes net neu nfa nfb nfc nfe nff nfn nfo nfr nfs nft nfu nma nmb nmc nme nmm nmn nmo nmr nms nmt nmu nna nnb nnc nne nnf nnm nnn nno nns nnt nnu no- noa nob noc noe nof nom non noo nor nos not nou nra nrb nrc nre nrf nrm nrn nro nrr nrs nrt nru nsa nsb nsc nse nsf nsm nsn nso nsr nss nst nsu nta