-er -ey a-a a-b aaa aab aae aaf aao aap aar aay ab- aba abb abe abf abo abp abr aby aea aeb aee aef aeo aep aer aey af- afa afb afe aff afo afp afr afy aoa aob aoe aof aoo aop aor ap- apa apb ape apf apo app apr apy ar- ara arb are arf aro arp arr ary ay- aya aye ayf ayo ayp ayr b-p baa bab bae baf bao bap bar bay bba bbb bbe bbf bbo bbp bbr bby be- bea beb bee bef beo bep ber bey bfa bfb bfe bff bfo bfp bfr bfy boa bob boe bof boo bop bor boy bpa bpb bpe bpf bpo bpp bpr bpy bra brb bre brf bro brp brr bry by- bya bye byf byo byp byr eaa eab eae eaf eao eap ear eba ebb ebe ebf ebo ebp ebr eby eea eeb eee eef eeo eep eer eey ef- efa efb efe eff efo efp efr eo- eoa eob eoe eof eoo eop eor ep- epa epb epe epf epo epp epr era erb ere erf ero erp err ery eya eye eyo eyp eyr faa fab fae faf fao fap far fay fba fbb fbe fbf fbo fbp fbr fea feb fee fef feo fep fer fey ffa ffe fff ffo ffp ffr ffy foa fob foe fof foo fop for foy fpa fpb fpe fpo fpp fpr fpy fra frb fre frf fro frp frr fry fy- fya fyb fye fyo fyp oaa oab oae oaf oao oap oar ob- oba obb obe obf obo obp obr oby oea oeb oee oef oeo oep oer oey of- ofa ofb ofe off ofo ofp ofr oo- ooa oob oof ooo oop oor op- opa opb ope opf opo opp opr opy or- ora orb ore orf oro orp orr ory oya oye oyo p-p paa pab pae paf pao pap par pay pba pbb pbe pbf pbo pbp pbr pby pea peb pee pef peo pep per pey pfa pfb pfe pff pfo pfp pfr pfy poa pob poe pof poo pop por poy ppa ppb ppe ppf ppo ppp ppr pra prb pre prf pro prp prr pry py- pya pyb pye pyf pyo pyr ra- raa rab rae raf rao rap rar ray rba rbb rbe rbf rbo rbp rbr re- rea reb ree ref reo rep rer rey rfa rfb rfe rff rfo rfp rfr roa rob roe rof roo rop ror roy rpa rpb rpe rpf rpo rpp rpr rra rrb rrf rrp rrr ry- rya rye ryf ryo ryr ryy yaa yab yae yaf yao yap yar yay ybe ybf ybp ybr yby yea yeb yee yef yeo yep yer yey yfa yfe yff yfr yob yoe yof yoo yop yor yoy ypa ypf ypo yra yre yrf yro yrp yyb yye yyf yyy