a-a a-c aaa aac aah aan aas ac- aca acc ach acn acs aha ahc ahh ahn ahs an- ana anc anh ann ans as- asa asc ash asn ass c-- caa cac cah can cas cca ccc cch ccn ccs ch- cha chc chh chn chs cn- cna cnc cnh cnn cns csa csc csh csn css haa hac hah han has hca hcc hch hcn hcs hha hhc hhh hhn hhs hna hnc hnh hnn hns hsa hsc hsh hsn hss naa nac nah nan nas nca ncc nch ncn ncs nha nhc nhh nhn nhs nna nnc nnh nnn nns nsa nsc nsh nsn nss saa sac sah san sas sca scc sch scn scs sh- sha shc shh shn shs sna snc snn sns ss- ssa ssc ssh ssn sss