a-a a-b a-i aaa aab aag aai aak aar aau ab- aba abb abg abi abk abr abu ag- aga agb agg agi agk agr agu ai- aia aib aig aii aik air aiu aka akb akg aki akk akr aku ar- ara arb arg ari ark arr aru au- aua aub aug aui auk aur b-u baa bab bag bai bak bar bau bba bbb bbg bbi bbk bbr bbu bga bgb bgg bgi bgk bgr bgu bi- bia bib big bii bik bir biu bka bkb bkg bkk bkr bra brb brg bri brk brr bru bua bub bug bui buk bur buu gaa gab gag gai gak gar gau gba gbg gbi gbk gbr gbu gga ggb ggg ggi ggr ggu gia gib gig gii gik gir giu gka gkb gra grb grg gri grk grr gru gu- gua gub gug gui guk gur guu ia- iaa iab iag iai iar iau iba ibb ibg ibi ibk ibr ibu iga igb igg igi igk igr igu iia iib iii iir iiu ika ikb iki ikk ikr iku ir- ira irb irg iri irk irr iru iu- iua iub iug iui iur ka- kaa kab kag kai kak kar kau kba kbb kbi kbk kbr kbu kga kgb kgi kgu kia kib kig kii kik kir kiu kkb kki kkk kkr kku kra krg kri krk krr kru kub kug kui kuk kur kuu ra- raa rab rag rai rak rar rau rba rbb rbg rbi rbk rbr rbu rga rgb rgg rgi rgk rgr ria rib rig rii rik rir rkb rkg rkk rku rra rrb rrg rri rrk rrr rru rua rub rug rui ruk rur ruu ua- uaa uab uag uai uak uar uau uba ubb ubg ubi ubk ubr ubu uga ugb ugg ugi ugk ugr ugu uia uib uig uii uir uiu uka ukb uki ukk ukr uku ur- ura urb urg uri urk urr uru uua uug uur uuu