a-a a-b a-i aaa aab aad aag aai aay ab- aba abb abd abg abi aby ad- ada adb add adg adi ady ag- aga agb agd agg agi agy ai- aia aib aid aig aii aiy ay- aya ayd ayi baa bab bad bag bai bay bba bbb bbd bbg bbi bby bda bdb bdd bdg bdi bdy bga bgb bgd bgg bgi bi- bia bib bid big bii biy by- bya byd byg byi daa dab dad dag dai day dba dbb dbd dbg dbi dby dda ddb ddd ddg ddi ddy dga dgd dgg dgi di- dia dib did dig dii diy dy- dya dyb dyd dyy g-d gaa gab gad gag gai gay gba gbd gbg gbi gby gda gdb gdd gdi gga ggb ggd ggg ggi gia gib gid gig gii giy gy- gya gyb gyd i-d ia- iaa iab iad iag iai iba ibb ibd ibg ibi iby ida idb idd idg idi idy iga igb igd igg igi igy iia iib iid iii iya iyy yaa yab yad yag yai yay ybg ybi yby yda ydg ydy yga yid yig yii yyb yyg yyy