-ey a-a a-b aaa aab aae aan aao aau aay ab- aba abb abe abn abo abu aby aea aeb aee aen aeo aeu aey an- ana anb ane ann ano anu any aoa aob aoe aon aoo aou au- aua aub aue aun auo ay- aya aye ayn ayo ayu b-u baa bab bae ban bao bau bay bba bbb bbe bbn bbo bbu bby be- bea beb bee ben beo beu bey bna bnb bne bnn bno bnu boa bob boe bon boo bou boy bua bub bue bun buo buu buy by- bya bye byn byo byu eaa eab eae ean eao eau eba ebb ebe ebn ebo ebu eby eea eeb eee een eeo eey en- ena enb ene enn eno enu eny eo- eoa eob eoe eon eoo eou eu- eua eub eue eun eya eye eyn eyo naa nab nae nan nao nau nay nba nbb nbe nbn nbo nbu ne- nea neb nee nen neo neu ney nna nnb nne nnn nno nnu no- noa nob noe non noo nou noy nua nub nue nun nuo nuu nuy nya nye nyn nyo nyu nyy oaa oab oae oan oao oau ob- oba obb obe obn obo obu oby oea oeb oee oen oeo oey on- ona onb one onn ono onu ony oo- ooa oob oon ooo ou- oua oue oun ouo oya oye oyo ua- uaa uab uae uan uao uau uay uba ubb ube ubn ubo ubu uby uea ueb uee uen uey un- una unb une unn uno unu uny uoa uob uoe uon uoo uua uue uun uuu uyo uyu yaa yab yae yan yao yau yay ybe yby yea yeb yee yen yeo yey yna yne ynn ynu yny yob yoe yon yoo you yoy yua yue yun yuo yuu yuy yyb yye yyu yyy