a-a a-b a-t aaa aab aad aan aap aas aat aay ab- aba abb abd abn abp abs abt aby ad- ada adb add adn adp ads adt ady an- ana anb and ann anp ans ant any ap- apa apb apd apn app aps apt apy as- asa asb asd asn asp ass ast asy at- ata atb atd atn atp ats att ay- aya ayd ayn ayp ays ayt b-p baa bab bad ban bap bas bat bay bba bbb bbd bbn bbp bbs bbt bby bda bdb bdd bdp bds bdt bdy bna bnb bnd bnn bnp bns bnt bpa bpb bpd bpn bpp bps bpt bpy bsa bsb bsd bsn bsp bss bst bsy bta btb btd btn btp bts btt bty by- bya byd byn byp bys byt daa dab dad dan dap das dat day dba dbb dbd dbn dbp dbs dbt dby dda ddb ddd ddn ddp dds ddt ddy dna dnb dnd dnn dnp dns dnt dny dpa dpb dpd dpn dpp dps dpt dsa dsb dsd dsn dsp dss dst dsy dta dtb dtd dtn dtp dts dtt dty dy- dya dyb dyd dyn dyp dys dyy naa nab nad nan nap nas nat nay nba nbb nbd nbn nbp nbs nbt nda ndb ndd ndn ndp nds ndt ndy nna nnb nnn nnp nns nnt npa npb npd npn npp nps npt nsa nsb nsd nsn nsp nss nst nsy nta ntb ntd ntn ntp nts ntt nya nyd nyn nyp nys nyt nyy p-p paa pab pad pan pap pas pat pay pba pbb pbd pbn pbp pbs pbt pby pda pdb pdd pdn pdp pds pdt pn- pna pnb pnd pnn pnp pns pnt pny ppa ppb ppd ppn ppp pps ppt ps- psa psb psd psn psp pss pst psy pt- pta ptb ptd ptn ptp pts ptt pty py- pya pyb pyd pyn pys pyt saa sab sad san sap sas sat say sba sbb sbd sbn sbp sbs sbt sby sda sdb sdd sdn sdp sds sdt sdy sna snb snd snn snp sns snt sny spa spb spd spn spp sps spt spy ss- ssa ssb ssd ssn ssp sss sst sta stb std stn stp sts stt sty sy- sya syb syd syn syp sys syt taa tab tad tan tap tas tat tay tba tbb tbd tbn tbp tbs tbt tda tdb tdd tdn tdp tds tdt tdy tna tnb tnd tnn tnp tns tnt tpa tpb tpd tpn tpp tps tpt tsa tsb tsd tsn tsp tss tst tsy tta ttb ttd ttn ttp tts ttt tty tya tyd tyn typ tys tyt yaa yab yad yan yap yas yat yay ybp ybs yby yda ydn yds ydt ydy yna ynd ynn ynp yns yny ypa ypd yps ysa ysb ysp yss yst ysy yta ytd ytn ytp yts ytt yyb yys yyt yyy