-ey a-a a-b a-c aaa aab aac aad aae aak aao aap aas aay ab- aba abb abc abd abe abk abo abp abs aby ac- aca acb acc acd ace ack aco acp acs acy ad- ada adb adc add ade adk ado adp ads ady aea aeb aec aed aee aek aeo aep aes aey aka akb akc akd ake akk ako akp aks aoa aob aoc aod aoe aok aoo aop aos ap- apa apb apc apd ape apk apo app aps apy as- asa asb asc asd ase ask aso asp ass asy ay- aya ayc ayd aye ayk ayo ayp ays b-p baa bab bac bad bae bak bao bap bas bay bba bbb bbc bbd bbe bbk bbo bbp bbs bby bca bcb bcc bcd bce bck bco bcp bcs bcy bda bdb bdc bdd bde bdk bdo bdp bds bdy be- bea beb bec bed bee bek beo bep bes bey bka bkb bkc bke bkk bko bkp bks boa bob boc bod boe bok boo bop bos boy bpa bpb bpc bpd bpe bpo bpp bps bpy bsa bsb bsc bsd bse bsk bso bsp bss bsy by- bya byc byd bye byk byo byp bys c-- caa cab cac cad cae cak cao cap cas cay cba cbb cbc cbd cbe cbk cbo cbp cbs cby cca ccb ccc ccd cce cck cco ccp ccs cda cdb cdc cdd cde cdk cdo cdp cds cdy ce- cea ceb cec ced cee cek ceo cep ces cey cka ckb ckc ckd cko cks cky co- coa cob coc cod coe cok coo cop cos coy cpa cpb cpc cpd cpe cpk cpo cpp cps csa csb csc csd cse csk cso csp css csy cya cyb cyc cyd cye cyk cyo cyp cys daa dab dac dad dae dak dao dap das day dba dbb dbc dbd dbe dbk dbo dbp dbs dby dca dcb dcc dcd dce dck dco dcp dcs dda ddb ddc ddd dde ddk ddo ddp dds ddy de- dea deb dec ded dee dek deo dep des dey dka dkb dkc dke dkk dko dkp dks doa dob doc dod doe dok doo dop dos doy dpa dpb dpc dpd dpe dpk dpo dpp dps dsa dsb dsc dsd dse dsk dso dsp dss dsy dy- dya dyb dyc dyd dye dyk dyo dyp dys dyy eaa eab eac ead eae eak eao eap eas eba ebb ebc ebd ebe ebk ebo ebp ebs eby ec- eca ecb ecc ecd ece eck eco ecs ed- eda edb edc edd ede edk edo edp eds edy eea eeb eec eed eee eek eeo eep ees eey eka ekb ekc ekd eke eko ekp eks eky eo- eoa eob eoc eod eoe eok eoo eop eos ep- epa epb epc epd epe epo epp eps es- esa esb esc esd ese esk eso esp ess esy eya eyc eyd eye eyo eyp eys ka- kaa kab kac kad kae kak kao kap kas kay kba kbb kbc kbd kbe kbk kbo kbp kbs kca kcb kcc kcd kce kck kcp kcs kda kdb kdc kde kdk kdo kdp kds kdy ke- kea keb kec ked kee kek keo kep kes key kkb kkc kke kkk kkp kks kky koa kob koc kod koe kok koo kop kos koy kpa kpc kpd kpe kpk kpo kpp kps ksa ksb ksc ksd kse ksk kso ksp kss kya kyc kyd kye kyo kyp kys oaa oab oac oad oae oak oao oap oas ob- oba obb obc obd obe obk obo obp obs oby oc- oca ocb occ ocd ock oco ocp ocs oda odb odc odd ode odo odp ods oea oeb oec oed oee oeo oep oes oey oka okb okc okd oke okk oko okp oks oo- ooa oob ooc ood ook ooo oop oos op- opa opb opc opd ope opk opo opp ops opy os- osa osb osc osd ose osk oso osp oss oya oyd oye oyo oys p-p paa pab pac pad pae pak pao pap pas pay pba pbb pbc pbd pbe pbk pbo pbp pbs pby pca pcb pcc pcd pce pck pco pcp pcs pda pdb pdc pdd pde pdk pdo pdp pds pea peb pec ped pee pek peo pep pes pey pka pkb pkc pkd pke pko pkp pks pky poa pob poc pod poe pok poo pop pos poy ppa ppb ppc ppd ppe ppk ppo ppp pps ps- psa psb psc psd pse psk pso psp pss psy py- pya pyb pyc pyd pye pyk pyo pys saa sab sac sad sae sak sao sap sas say sba sbb sbc sbd sbe sbk sbo sbp sbs sby sca scb scc scd sce sck sco scp scs sda sdb sdc sdd sde sdk sdo sdp sds sdy se- sea seb sec sed see sek seo sep ses sey sk- ska skb skc skd ske skk sko skp sks sky soa sob soc sod soe sok soo sop sos soy spa spb spc spd spe spk spo spp sps spy ss- ssa ssb ssc ssd sse ssk sso ssp sss sy- sya syb syc syd sye syk syp sys yaa yab yac yad yae yak yao yap yas yay ybc ybe ybp ybs yby yca ycc ycd yce yco ycp ycs ycy yda yde ydo yds ydy yea yeb yec yed yee yek yeo yep yes yey yka ykk yob yoc yod yoe yok yoo yop yos yoy ypa ypd ypo yps ysa ysb ysc yse ysk yso ysp yss ysy yyb yyc yye yys yyy