-er -ey a-a a-b aaa aab aae aaf aao aap aar aas aay ab- aba abb abe abf abo abp abr abs aby aea aeb aee aef aeo aep aer aes aey af- afa afb afe aff afo afp afr afs afy aoa aob aoe aof aoo aop aor aos ap- apa apb ape apf apo app apr aps apy ar- ara arb are arf aro arp arr ars ary as- asa asb ase asf aso asp asr ass asy ay- aya aye ayf ayo ayp ayr ays b-p baa bab bae baf bao bap bar bas bay bba bbb bbe bbf bbo bbp bbr bbs bby be- bea beb bee bef beo bep ber bes bey bfa bfb bfe bff bfo bfp bfr bfs bfy boa bob boe bof boo bop bor bos boy bpa bpb bpe bpf bpo bpp bpr bps bpy bra brb bre brf bro brp brr brs bry bsa bsb bse bsf bso bsp bsr bss bsy by- bya bye byf byo byp byr bys eaa eab eae eaf eao eap ear eas eba ebb ebe ebf ebo ebp ebr ebs eby eea eeb eee eef eeo eep eer ees eey ef- efa efb efe eff efo efp efr efs eo- eoa eob eoe eof eoo eop eor eos ep- epa epb epe epf epo epp epr eps era erb ere erf ero erp err ers ery es- esa esb ese esf eso esp esr ess esy eya eye eyo eyp eyr eys faa fab fae faf fao fap far fas fay fba fbb fbe fbf fbo fbp fbr fbs fea feb fee fef feo fep fer fes fey ffa ffe fff ffo ffp ffr ffs ffy foa fob foe fof foo fop for fos foy fpa fpb fpe fpo fpp fpr fps fpy fra frb fre frf fro frp frr frs fry fsa fsb fse fsf fso fsp fsr fss fy- fya fyb fye fyo fyp oaa oab oae oaf oao oap oar oas ob- oba obb obe obf obo obp obr obs oby oea oeb oee oef oeo oep oer oes oey of- ofa ofb ofe off ofo ofp ofr ofs oo- ooa oob oof ooo oop oor oos op- opa opb ope opf opo opp opr ops opy or- ora orb ore orf oro orp orr ors ory os- osa osb ose osf oso osp osr oss oya oye oyo oys p-p paa pab pae paf pao pap par pas pay pba pbb pbe pbf pbo pbp pbr pbs pby pea peb pee pef peo pep per pes pey pfa pfb pfe pff pfo pfp pfr pfs pfy poa pob poe pof poo pop por pos poy ppa ppb ppe ppf ppo ppp ppr pps pra prb pre prf pro prp prr prs pry ps- psa psb pse psf pso psp psr pss psy py- pya pyb pye pyf pyo pyr pys ra- raa rab rae raf rao rap rar ras ray rba rbb rbe rbf rbo rbp rbr rbs re- rea reb ree ref reo rep rer res rey rfa rfb rfe rff rfo rfp rfr rfs roa rob roe rof roo rop ror ros roy rpa rpb rpe rpf rpo rpp rpr rps rra rrb rrf rrp rrr rrs rsa rsb rse rsf rso rsp rsr rss ry- rya rye ryf ryo ryr rys ryy saa sab sae saf sao sap sar sas say sba sbb sbe sbf sbo sbp sbr sbs sby se- sea seb see sef seo sep ser ses sey sfa sfb sfe sff sfo sfp sfr sfs soa sob soe sof soo sop sor sos soy spa spb spe spf spo spp spr sps spy sr- sra srb sre srf sro srp srr srs sry ss- ssa ssb sse ssf sso ssp ssr sss sy- sya syb sye syp syr sys yaa yab yae yaf yao yap yar yas yay ybe ybf ybp ybr ybs yby yea yeb yee yef yeo yep yer yes yey yfa yfe yff yfr yfs yob yoe yof yoo yop yor yos yoy ypa ypf ypo yps yra yre yrf yro yrp yrs ysa ysb yse yso ysp ysr yss ysy yyb yye yyf yys yyy