a-a a-b aaa aab aae aah aan aao aau ab- aba abb abe abh abn abo abu aea aeb aee aeh aen aeo aeu aha ahb ahe ahh ahn aho ahu an- ana anb ane anh ann ano anu aoa aob aoe aoh aon aoo aou au- aua aub aue auh aun auo b-u baa bab bae bah ban bao bau bba bbb bbe bbh bbn bbo bbu be- bea beb bee beh ben beo beu bha bhb bhe bhh bho bhu bna bnb bne bnn bno bnu boa bob boe boh bon boo bou bua bub bue buh bun buo buu eaa eab eae eah ean eao eau eba ebb ebe ebh ebn ebo ebu eea eeb eee een eeo eha ehb ehe ehh ehn eho ehu en- ena enb ene enh enn eno enu eo- eoa eob eoe eoh eon eoo eou eu- eua eub eue eun haa hab hae hah han hao hau hba hbb hbe hbh hbn hbo hbu he- hea heb hee heh hen heo heu hha hhb hhe hhh hhn hho hhu hna hnb hne hnh hnn hno hnu hoa hob hoe hoh hon hoo hou hua hub hue huh hun huo huu naa nab nae nah nan nao nau nba nbb nbe nbn nbo nbu ne- nea neb nee neh nen neo neu nha nhb nhe nhh nhn nhu nna nnb nne nnh nnn nno nnu no- noa nob noe noh non noo nou nua nub nue nuh nun nuo nuu oaa oab oae oah oan oao oau ob- oba obb obe obh obn obo obu oea oeb oee oeh oen oeo oha ohe ohh ohn oho ohu on- ona onb one onh onn ono onu oo- ooa oob ooh oon ooo ou- oua oue ouh oun ouo ua- uaa uab uae uah uan uao uau uba ubb ube ubh ubn ubo ubu uea ueb uee ueh uen uha uhb uhe uhh uho uhu un- una unb une unh unn uno unu uoa uob uoe uon uoo uua uue uun uuu