a-a a-c aaa aac aad aah aay ac- aca acc acd ach acy ad- ada adc add adh ady aha ahc ahd ahh ahy ay- aya ayc ayd ayh c-- caa cac cad cah cay cca ccc ccd cch cda cdc cdd cdh cdy ch- cha chc chd chh chy cya cyc cyd daa dac dad dah day dca dcc dcd dda ddc ddd ddh ddy dh- dha dhc dhd dhh dy- dya dyc dyd dyy haa hac had hah hay hca hcc hcd hch hcy hda hdc hdd hdh hdy hha hhc hhd hhh hhy hy- hya hyc hyd hyh hyy yaa yac yad yah yay yca ycc ycd ych ycy yda ydy yha yhc yyc yyy