-er -ey a-a a-b a-t aaa aab aae aan aar aat aav aay ab- aba abb abe abn abr abt abv aby aea aeb aee aen aer aet aev aey an- ana anb ane ann anr ant anv any ar- ara arb are arn arr art arv ary at- ata atb ate atn atr att atv av- ava avb ave avn avr avt avy ay- aya aye ayn ayr ayt baa bab bae ban bar bat bav bay bba bbb bbe bbn bbr bbt bby be- bea beb bee ben ber bet bev bey bna bnb bne bnn bnr bnt bnv bra brb bre brn brr brt brv bry bta btb bte btn btr btt btv bty bva bvb bve bvn bvr bvt bvv by- bya bye byn byr byt eaa eab eae ean ear eat eav eba ebb ebe ebn ebr ebt ebv eby eea eeb eee een eer eet eev eey en- ena enb ene enn enr ent env eny era erb ere ern err ert erv ery eta etb ete etn etr ett etv ety eva evb eve evn evr evt evv evy eya eye eyn eyr eyt naa nab nae nan nar nat nav nay nba nbb nbe nbn nbr nbt nbv ne- nea neb nee nen ner net nev ney nna nnb nne nnn nnt nnv nra nrb nre nrn nrr nrt nrv nry nta ntb nte ntn ntr ntt ntv nva nvb nve nvn nvt nvv nya nye nyn nyt nyy ra- raa rab rae ran rar rat rav ray rba rbb rbe rbn rbr rbt re- rea reb ree ren rer ret rev rey rna rnb rnn rnr rnt rnv rny rra rrb rrn rrr rrt rta rtb rte rtn rtr rtt rtv rty rva rvb rve rvn rvr rvt rvv rvy ry- rya rye ryn ryr ryy taa tab tae tan tar tat tav tay tba tbb tbe tbn tbr tbt tbv te- tea teb tee ten ter tet tev tey tna tnb tne tnn tnr tnt tra trb tre trn trr trt trv try tta ttb tte ttn ttr ttt ttv tty tva tvb tve tvn tvr tvt tvy tya tye tyn tyr tyt v-a v-e vaa vab vae van var vat vav vay vba vbr vbv vea veb vee ven ver vet vey vn- vna vnr vnv vra vrb vre vrn vrr vrt vry vta vtb vte vtr vtt vtv vty vva vvb vvr vvt vvv vye vyn vyt yaa yab yae yan yar yat yav yay ybe ybr yby yea yeb yee yen yer yet yev yey yna yne ynn yny yra yre yrn yrt yta yte ytn ytr ytt ytv yva yve yvr yvy yyb yye yyt yyy