-ey a-a a-b aaa aab aae aan aap aas aay ab- aba abb abe abn abp abs aby aea aeb aee aen aep aes aey an- ana anb ane ann anp ans any ap- apa apb ape apn app aps apy as- asa asb ase asn asp ass asy ay- aya aye ayn ayp ays b-p baa bab bae ban bap bas bay bba bbb bbe bbn bbp bbs bby be- bea beb bee ben bep bes bey bna bnb bne bnn bnp bns bpa bpb bpe bpn bpp bps bpy bsa bsb bse bsn bsp bss bsy by- bya bye byn byp bys eaa eab eae ean eap eas eba ebb ebe ebn ebp ebs eby eea eeb eee een eep ees eey en- ena enb ene enn enp ens eny ep- epa epb epe epn epp eps es- esa esb ese esn esp ess esy eya eye eyn eyp eys naa nab nae nan nap nas nay nba nbb nbe nbn nbp nbs ne- nea neb nee nen nep nes ney nna nnb nne nnn nnp nns npa npb npe npn npp nps nsa nsb nse nsn nsp nss nsy nya nye nyn nyp nys nyy p-p paa pab pae pan pap pas pay pba pbb pbe pbn pbp pbs pby pea peb pee pen pep pes pey pn- pna pnb pne pnn pnp pns pny ppa ppb ppe ppn ppp pps ps- psa psb pse psn psp pss psy py- pya pyb pye pyn pys saa sab sae san sap sas say sba sbb sbe sbn sbp sbs sby se- sea seb see sen sep ses sey sna snb sne snn snp sns sny spa spb spe spn spp sps spy ss- ssa ssb sse ssn ssp sss sy- sya syb sye syn syp sys yaa yab yae yan yap yas yay ybe ybp ybs yby yea yeb yee yen yep yes yey yna yne ynn ynp yns yny ypa yps ysa ysb yse ysp yss ysy yyb yye yys yyy