a-a a-b aaa aab aag aah aan aao aar aau ab- aba abb abg abh abn abo abr abu ag- aga agb agg agh agn ago agr agu aha ahb ahg ahh ahn aho ahr ahu an- ana anb ang anh ann ano anr anu aoa aob aog aoh aon aoo aor aou ar- ara arb arg arh arn aro arr aru au- aua aub aug auh aun auo aur b-u baa bab bag bah ban bao bar bau bba bbb bbg bbh bbn bbo bbr bbu bga bgb bgg bgh bgn bgo bgr bgu bha bhb bhg bhh bho bhr bhu bna bnb bng bnn bno bnr bnu boa bob bog boh bon boo bor bou bra brb brg brh brn bro brr bru bua bub bug buh bun buo bur buu gaa gab gag gah gan gao gar gau gba gbg gbh gbn gbo gbr gbu gga ggb ggg ggh ggn ggo ggr ggu gha ghb ghg ghh ghn gho ghr gna gnb gnn gno gnr gnu goa gob gog goh gon goo gor gou gra grb grg grh grn gro grr gru gu- gua gub gug gun guo gur guu haa hab hag hah han hao har hau hba hbb hbg hbh hbn hbo hbr hbu hga hgb hgg hgh hgn hgo hgr hgu hha hhb hhg hhh hhn hho hhr hhu hna hnb hng hnh hnn hno hnu hoa hob hog hoh hon hoo hor hou hr- hra hrb hrg hrh hrn hro hrr hru hua hub hug huh hun huo hur huu naa nab nag nah nan nao nar nau nba nbb nbg nbn nbo nbr nbu nga ngb ngg ngh ngn ngo ngu nha nhb nhg nhh nhn nhr nhu nna nnb nng nnh nnn nno nnu no- noa nob nog noh non noo nor nou nra nrb nrg nrn nro nrr nru nua nub nug nuh nun nuo nur nuu oaa oab oag oah oan oao oar oau ob- oba obb obg obh obn obo obr obu oga ogg ogh ogn ogo oha ohg ohh ohn oho ohr ohu on- ona onb ong onh onn ono onr onu oo- ooa oob oog ooh oon ooo oor or- ora orb org orh orn oro orr oru ou- oua ouh oun ouo our ra- raa rab rag rah ran rao rar rau rba rbb rbg rbh rbn rbo rbr rbu rga rgb rgg rgh rgn rgo rgr rh- rha rhb rhg rhh rhn rho rhr rhu rna rnb rng rnh rnn rno rnr rnu roa rob rog roh ron roo ror rou rra rrb rrg rrh rrn rrr rru rua rub rug ruh run ruo rur ruu ua- uaa uab uag uah uan uao uar uau uba ubb ubg ubh ubn ubo ubr ubu uga ugb ugg ugh ugn ugo ugr ugu uha uhb uhh uho uhr uhu un- una unb ung unh unn uno unr unu uoa uob uog uon uoo uor ur- ura urb urg urn uro urr uru uua uug uun uur uuu