a-a a-c aaa aac aaf aah aar aas ac- aca acc acf ach acr acs af- afa afc aff afh afr afs aha ahc ahf ahh ahr ahs ar- ara arc arf arh arr ars as- asa asc asf ash asr ass c-- caa cac caf cah car cas cca ccc ccf cch ccr ccs cfa cfc cff cfh cfr cfs ch- cha chc chf chh chr chs cra crc crf crh crr crs csa csc csf csh csr css faa fac faf fah far fas fca fcc fcf fcr fcs ffa ffc fff ffh ffr ffs fha fhc fhf fhh fhr fhs fra frc frf frh frr frs fsa fsc fsf fsh fsr fss haa hac haf hah har has hca hcc hcf hch hcr hcs hfa hfc hff hfh hfr hfs hha hhc hhf hhh hhr hhs hr- hra hrc hrf hrh hrr hrs hsa hsc hsf hsh hsr hss ra- raa rac raf rah rar ras rca rcc rcf rch rcr rcs rfa rfc rff rfh rfr rfs rh- rha rhc rhf rhh rhr rhs rra rrc rrf rrh rrr rrs rsa rsc rsf rsh rsr rss saa sac saf sah sar sas sca scc scf sch scr scs sfa sfc sff sfh sfr sfs sh- sha shc shf shh shr shs sr- sra src srf srh srr srs ss- ssa ssc ssf ssh ssr sss