-er -ey a-a a-b aaa aab aae aan aap aar aas aay ab- aba abb abe abn abp abr abs aby aea aeb aee aen aep aer aes aey an- ana anb ane ann anp anr ans any ap- apa apb ape apn app apr aps apy ar- ara arb are arn arp arr ars ary as- asa asb ase asn asp asr ass asy ay- aya aye ayn ayp ayr ays b-p baa bab bae ban bap bar bas bay bba bbb bbe bbn bbp bbr bbs bby be- bea beb bee ben bep ber bes bey bna bnb bne bnn bnp bnr bns bpa bpb bpe bpn bpp bpr bps bpy bra brb bre brn brp brr brs bry bsa bsb bse bsn bsp bsr bss bsy by- bya bye byn byp byr bys eaa eab eae ean eap ear eas eba ebb ebe ebn ebp ebr ebs eby eea eeb eee een eep eer ees eey en- ena enb ene enn enp enr ens eny ep- epa epb epe epn epp epr eps era erb ere ern erp err ers ery es- esa esb ese esn esp esr ess esy eya eye eyn eyp eyr eys naa nab nae nan nap nar nas nay nba nbb nbe nbn nbp nbr nbs ne- nea neb nee nen nep ner nes ney nna nnb nne nnn nnp nns npa npb npe npn npp npr nps nra nrb nre nrn nrp nrr nrs nry nsa nsb nse nsn nsp nsr nss nsy nya nye nyn nyp nys nyy p-p paa pab pae pan pap par pas pay pba pbb pbe pbn pbp pbr pbs pby pea peb pee pen pep per pes pey pn- pna pnb pne pnn pnp pnr pns pny ppa ppb ppe ppn ppp ppr pps pra prb pre prn prp prr prs pry ps- psa psb pse psn psp psr pss psy py- pya pyb pye pyn pyr pys ra- raa rab rae ran rap rar ras ray rba rbb rbe rbn rbp rbr rbs re- rea reb ree ren rep rer res rey rna rnb rnn rnp rnr rns rny rpa rpb rpe rpn rpp rpr rps rra rrb rrn rrp rrr rrs rsa rsb rse rsn rsp rsr rss ry- rya rye ryn ryr rys ryy saa sab sae san sap sar sas say sba sbb sbe sbn sbp sbr sbs sby se- sea seb see sen sep ser ses sey sna snb sne snn snp snr sns sny spa spb spe spn spp spr sps spy sr- sra srb sre srn srp srr srs sry ss- ssa ssb sse ssn ssp ssr sss sy- sya syb sye syn syp syr sys yaa yab yae yan yap yar yas yay ybe ybp ybr ybs yby yea yeb yee yen yep yer yes yey yna yne ynn ynp yns yny ypa yps yra yre yrn yrp yrs ysa ysb yse ysp ysr yss ysy yyb yye yys yyy