a-a a-c aaa aac aad aah aar ac- aca acc acd ach acr ad- ada adc add adh adr aha ahc ahd ahh ahr ar- ara arc ard arh arr c-- caa cac cad cah car cca ccc ccd cch ccr cda cdc cdd cdh cdr ch- cha chc chd chh chr cra crc crd crh crr daa dac dad dah dar dca dcc dcd dcr dda ddc ddd ddh ddr dh- dha dhc dhd dhh dhr dra drc drd drr haa hac had hah har hca hcc hcd hch hcr hda hdc hdd hdh hdr hha hhc hhd hhh hhr hr- hra hrc hrd hrh hrr ra- raa rac rad rah rar rca rcc rcd rch rcr rda rdc rdd rdh rdr rh- rha rhc rhd rhh rhr rra rrc rrd rrh rrr