-er -ey a-a a-b a-t aaa aab aae aan aar aat aau aay ab- aba abb abe abn abr abt abu aby aea aeb aee aen aer aet aeu aey an- ana anb ane ann anr ant anu any ar- ara arb are arn arr art aru ary at- ata atb ate atn atr att atu au- aua aub aue aun aur aut ay- aya aye ayn ayr ayt ayu b-u baa bab bae ban bar bat bau bay bba bbb bbe bbn bbr bbt bbu bby be- bea beb bee ben ber bet beu bey bna bnb bne bnn bnr bnt bnu bra brb bre brn brr brt bru bry bta btb bte btn btr btt btu bty bua bub bue bun bur but buu buy by- bya bye byn byr byt byu eaa eab eae ean ear eat eau eba ebb ebe ebn ebr ebt ebu eby eea eeb eee een eer eet eey en- ena enb ene enn enr ent enu eny era erb ere ern err ert eru ery eta etb ete etn etr ett etu ety eu- eua eub eue eun eur eut eya eye eyn eyr eyt naa nab nae nan nar nat nau nay nba nbb nbe nbn nbr nbt nbu ne- nea neb nee nen ner net neu ney nna nnb nne nnn nnt nnu nra nrb nre nrn nrr nrt nru nry nta ntb nte ntn ntr ntt ntu nua nub nue nun nur nut nuu nuy nya nye nyn nyt nyu nyy ra- raa rab rae ran rar rat rau ray rba rbb rbe rbn rbr rbt rbu re- rea reb ree ren rer ret reu rey rna rnb rnn rnr rnt rnu rny rra rrb rrn rrr rrt rru rta rtb rte rtn rtr rtt rtu rty rua rub rue run rur rut ruu ruy ry- rya rye ryn ryr ryu ryy taa tab tae tan tar tat tau tay tba tbb tbe tbn tbr tbt tbu te- tea teb tee ten ter tet teu tey tna tnb tne tnn tnr tnt tra trb tre trn trr trt tru try tta ttb tte ttn ttr ttt ttu tty tua tub tue tun tur tut tuu tuy tya tye tyn tyr tyt ua- uaa uab uae uan uar uat uau uay uba ubb ube ubn ubr ubt ubu uby uea ueb uee uen uer uet uey un- una unb une unn unr unt unu uny ur- ura urb ure urn urr urt uru ury uta utb ute utn utr utt utu uty uua uue uun uur uut uuu uyu yaa yab yae yan yar yat yau yay ybe ybr yby yea yeb yee yen yer yet yey yna yne ynn ynu yny yra yre yrn yrt yru yta yte ytn ytr ytt ytu yua yue yun yur yut yuu yuy yyb yye yyt yyu yyy