-er -ey a-a a-b a-t aaa aab aad aae aao aap aar aat aay ab- aba abb abd abe abo abp abr abt aby ad- ada adb add ade ado adp adr adt ady aea aeb aed aee aeo aep aer aet aey aoa aob aod aoe aoo aop aor aot ap- apa apb apd ape apo app apr apt apy ar- ara arb ard are aro arp arr art ary at- ata atb atd ate ato atp atr att ay- aya ayd aye ayo ayp ayr ayt b-p baa bab bad bae bao bap bar bat bay bba bbb bbd bbe bbo bbp bbr bbt bby bda bdb bdd bde bdo bdp bdr bdt bdy be- bea beb bed bee beo bep ber bet bey boa bob bod boe boo bop bor bot boy bpa bpb bpd bpe bpo bpp bpr bpt bpy bra brb brd bre bro brp brr brt bry bta btb btd bte bto btp btr btt bty by- bya byd bye byo byp byr byt daa dab dad dae dao dap dar dat day dba dbb dbd dbe dbo dbp dbr dbt dby dda ddb ddd dde ddo ddp ddr ddt ddy de- dea deb ded dee deo dep der det dey doa dob dod doe doo dop dor dot doy dpa dpb dpd dpe dpo dpp dpr dpt dra drb drd dre dro drp drr drt dry dta dtb dtd dte dto dtp dtr dtt dty dy- dya dyb dyd dye dyo dyp dyr dyy eaa eab ead eae eao eap ear eat eba ebb ebd ebe ebo ebp ebr ebt eby ed- eda edb edd ede edo edp edr edt edy eea eeb eed eee eeo eep eer eet eey eo- eoa eob eod eoe eoo eop eor eot ep- epa epb epd epe epo epp epr ept era erb erd ere ero erp err ert ery eta etb etd ete eto etp etr ett ety eya eyd eye eyo eyp eyr eyt oaa oab oad oae oao oap oar oat ob- oba obb obd obe obo obp obr obt oby oda odb odd ode odo odp odr odt oea oeb oed oee oeo oep oer oet oey oo- ooa oob ood ooo oop oor oot op- opa opb opd ope opo opp opr opt opy or- ora orb ord ore oro orp orr ort ory ot- ota otb otd ote oto otp otr ott oya oyd oye oyo p-p paa pab pad pae pao pap par pat pay pba pbb pbd pbe pbo pbp pbr pbt pby pda pdb pdd pde pdo pdp pdr pdt pea peb ped pee peo pep per pet pey poa pob pod poe poo pop por pot poy ppa ppb ppd ppe ppo ppp ppr ppt pra prb prd pre pro prp prr prt pry pt- pta ptb ptd pte pto ptp ptr ptt pty py- pya pyb pyd pye pyo pyr pyt ra- raa rab rad rae rao rap rar rat ray rba rbb rbd rbe rbo rbp rbr rbt rda rdb rdd rde rdo rdp rdr rdt rdy re- rea reb red ree reo rep rer ret rey roa rob rod roe roo rop ror rot roy rpa rpb rpd rpe rpo rpp rpr rpt rra rrb rrd rrp rrr rrt rta rtb rtd rte rto rtp rtr rtt rty ry- rya ryd rye ryo ryr ryy taa tab tad tae tao tap tar tat tay tba tbb tbd tbe tbo tbp tbr tbt tda tdb tdd tde tdo tdp tdr tdt tdy te- tea teb ted tee teo tep ter tet tey to- toa tob tod toe too top tor tot toy tpa tpb tpd tpe tpo tpp tpr tpt tra trb trd tre tro trp trr trt try tta ttb ttd tte tto ttp ttr ttt tty tya tyd tye tyo typ tyr tyt yaa yab yad yae yao yap yar yat yay ybe ybp ybr yby yda yde ydo ydt ydy yea yeb yed yee yeo yep yer yet yey yob yod yoe yoo yop yor yot yoy ypa ypd ypo yra yre yro yrp yrt yta ytd yte yto ytp ytr ytt yyb yye yyt yyy