a-a a-c aaa aac aae aah aas ac- aca acc ace ach acs aea aec aee aeh aes aha ahc ahe ahh ahs as- asa asc ase ash ass c-- caa cac cae cah cas cca ccc cce cch ccs ce- cea cec cee ceh ces ch- cha chc che chh chs csa csc cse csh css eaa eac eae eah eas ec- eca ecc ece ech ecs eea eec eee ees eha ehc ehe ehh ehs es- esa esc ese esh ess haa hac hae hah has hca hcc hce hch hcs he- hea hec hee heh hes hha hhc hhe hhh hhs hsa hsc hse hsh hss saa sac sae sah sas sca scc sce sch scs se- sea sec see seh ses sh- sha shc she shh shs ss- ssa ssc sse ssh sss