a-a aaa aad aah aar aax ad- ada add adh adr adx aha ahd ahh ahr ahx ar- ara ard arh arr arx ax- axa axh axr axx daa dad dah dar dax dda ddd ddh ddr ddx dh- dha dhd dhh dhr dra drd drr drx dxd dxr dxx haa had hah har hax hda hdd hdh hdr hdx hha hhd hhh hhr hr- hra hrd hrh hrr hxd ra- raa rad rah rar rax rda rdd rdh rdr rdx rh- rha rhd rhh rhr rra rrd rrh rrr rxr xaa xad xar xda xdh xdr xhd xrd xrx xxx