-er -ey a-a a-b aaa aab aad aae aap aar aas aay ab- aba abb abd abe abp abr abs aby ad- ada adb add ade adp adr ads ady aea aeb aed aee aep aer aes aey ap- apa apb apd ape app apr aps apy ar- ara arb ard are arp arr ars ary as- asa asb asd ase asp asr ass asy ay- aya ayd aye ayp ayr ays b-p baa bab bad bae bap bar bas bay bba bbb bbd bbe bbp bbr bbs bby bda bdb bdd bde bdp bdr bds bdy be- bea beb bed bee bep ber bes bey bpa bpb bpd bpe bpp bpr bps bpy bra brb brd bre brp brr brs bry bsa bsb bsd bse bsp bsr bss bsy by- bya byd bye byp byr bys daa dab dad dae dap dar das day dba dbb dbd dbe dbp dbr dbs dby dda ddb ddd dde ddp ddr dds ddy de- dea deb ded dee dep der des dey dpa dpb dpd dpe dpp dpr dps dra drb drd dre drp drr drs dry dsa dsb dsd dse dsp dsr dss dsy dy- dya dyb dyd dye dyp dyr dys dyy eaa eab ead eae eap ear eas eba ebb ebd ebe ebp ebr ebs eby ed- eda edb edd ede edp edr eds edy eea eeb eed eee eep eer ees eey ep- epa epb epd epe epp epr eps era erb erd ere erp err ers ery es- esa esb esd ese esp esr ess esy eya eyd eye eyp eyr eys p-p paa pab pad pae pap par pas pay pba pbb pbd pbe pbp pbr pbs pby pda pdb pdd pde pdp pdr pds pea peb ped pee pep per pes pey ppa ppb ppd ppe ppp ppr pps pra prb prd pre prp prr prs pry ps- psa psb psd pse psp psr pss psy py- pya pyb pyd pye pyr pys ra- raa rab rad rae rap rar ras ray rba rbb rbd rbe rbp rbr rbs rda rdb rdd rde rdp rdr rds rdy re- rea reb red ree rep rer res rey rpa rpb rpd rpe rpp rpr rps rra rrb rrd rrp rrr rrs rsa rsb rsd rse rsp rsr rss ry- rya ryd rye ryr rys ryy saa sab sad sae sap sar sas say sba sbb sbd sbe sbp sbr sbs sby sda sdb sdd sde sdp sdr sds sdy se- sea seb sed see sep ser ses sey spa spb spd spe spp spr sps spy sr- sra srb srd sre srp srr srs sry ss- ssa ssb ssd sse ssp ssr sss sy- sya syb syd sye syp syr sys yaa yab yad yae yap yar yas yay ybe ybp ybr ybs yby yda yde yds ydy yea yeb yed yee yep yer yes yey ypa ypd yps yra yre yrp yrs ysa ysb yse ysp ysr yss ysy yyb yye yys yyy