-er a-a a-c aaa aac aae aah aar aas ac- aca acc ace ach acr acs aea aec aee aeh aer aes aha ahc ahe ahh ahr ahs ar- ara arc are arh arr ars as- asa asc ase ash asr ass c-- caa cac cae cah car cas cca ccc cce cch ccr ccs ce- cea cec cee ceh cer ces ch- cha chc che chh chr chs cra crc cre crh crr crs csa csc cse csh csr css eaa eac eae eah ear eas ec- eca ecc ece ech ecr ecs eea eec eee eer ees eha ehc ehe ehh ehr ehs era erc ere erh err ers es- esa esc ese esh esr ess haa hac hae hah har has hca hcc hce hch hcr hcs he- hea hec hee heh her hes hha hhc hhe hhh hhr hhs hr- hra hrc hre hrh hrr hrs hsa hsc hse hsh hsr hss ra- raa rac rae rah rar ras rca rcc rce rch rcr rcs re- rea rec ree reh rer res rh- rha rhc rhe rhh rhr rhs rra rrc rrh rrr rrs rsa rsc rse rsh rsr rss saa sac sae sah sar sas sca scc sce sch scr scs se- sea sec see seh ser ses sh- sha shc she shh shr shs sr- sra src sre srh srr srs ss- ssa ssc sse ssh ssr sss