a-a a-c aaa aac aad aah aan ac- aca acc acd ach acn ad- ada adc add adh adn aha ahc ahd ahh ahn an- ana anc and anh ann c-- caa cac cad cah can cca ccc ccd cch ccn cda cdc cdd cdh cdn ch- cha chc chd chh chn cn- cna cnc cnd cnh cnn daa dac dad dah dan dca dcc dcd dcn dda ddc ddd ddh ddn dh- dha dhc dhd dhh dna dnc dnd dnh dnn haa hac had hah han hca hcc hcd hch hcn hda hdc hdd hdh hdn hha hhc hhd hhh hhn hna hnc hnd hnh hnn naa nac nad nah nan nca ncc ncd nch ncn nda ndc ndd ndh ndn nha nhc nhd nhh nhn nna nnc nnh nnn