a-a a-c aaa aac aah aan aar aax ac- aca acc ach acn acr acx aha ahc ahh ahn ahr ahx an- ana anc anh ann anr anx ar- ara arc arh arn arr arx ax- axa axh axn axr axx c-- caa cac cah can car cax cca ccc cch ccn ccr ccx ch- cha chc chh chn chr chx cn- cna cnc cnh cnn cnr cnx cra crc crh crn crr crx cxc cxh cxr cxx haa hac hah han har hax hca hcc hch hcn hcr hha hhc hhh hhn hhr hna hnc hnh hnn hr- hra hrc hrh hrn hrr hxc naa nac nah nan nar nax nca ncc nch ncn ncr ncx nha nhc nhh nhn nhr nna nnc nnh nnn nra nrc nrn nrr nrx nxc ra- raa rac rah ran rar rax rca rcc rch rcn rcr rcx rh- rha rhc rhh rhn rhr rna rnc rnh rnn rnr rra rrc rrh rrn rrr rxr xaa xac xan xar xch xcr xcx xna xnc xrc xrx xxx