a-a a-b a-i aaa aab aad aag aai aau ab- aba abb abd abg abi abu ad- ada adb add adg adi adu ag- aga agb agd agg agi agu ai- aia aib aid aig aii aiu au- aua aub aud aug aui b-u baa bab bad bag bai bau bba bbb bbd bbg bbi bbu bda bdb bdd bdg bdi bdu bga bgb bgd bgg bgi bgu bi- bia bib bid big bii biu bua bub bud bug bui buu daa dab dad dag dai dau dba dbb dbd dbg dbi dbu dda ddb ddd ddg ddi ddu dga dgd dgg dgi dgu di- dia dib did dig dii diu dua dub dud dug dui g-d gaa gab gad gag gai gau gba gbd gbg gbi gbu gda gdb gdd gdi gdu gga ggb ggd ggg ggi ggu gia gib gid gig gii giu gu- gua gub gud gug gui guu i-d ia- iaa iab iad iag iai iau iba ibb ibd ibg ibi ibu ida idb idd idg idi idu iga igb igd igg igi igu iia iib iid iii iiu iu- iua iub iud iug iui ua- uaa uab uad uag uai uau uba ubb ubg ubi ubu uda udb udd udg udi udu uga ugb ugg ugi ugu uia uib uid uig uii uiu uua uug uuu