-al -ol a-a a-c aaa aac aae aal aao aas ac- aca acc ace acl aco acs aea aec aee ael aeo aes al- ala alc ale all alo als aoa aoc aoe aol aoo aos as- asa asc ase asl aso ass c-- caa cac cae cal cao cas cca ccc cce ccl cco ccs ce- cea cec cee cel ceo ces cl- cla clc cle cll clo cls co- coa coc coe col coo cos csa csc cse csl cso css eaa eac eae eal eao eas ec- eca ecc ece ecl eco ecs eea eec eee eel eeo ees ela elc ele ell elo els eo- eoa eoc eoe eol eoo eos es- esa esc ese esl eso ess la- laa lac lae lal lao las lca lcc lce lcl lco lcs lea lec lee lel leo les lla llc lle lll llo lls loa loc loe lol loo los lsa lsc lse lsl lso lss oaa oac oae oal oao oas oc- oca occ ocl oco ocs oea oec oee oel oeo oes ola olc ole oll olo ols oo- ooa ooc ool ooo oos os- osa osc ose osl oso oss saa sac sae sal sao sas sca scc sce scl sco scs se- sea sec see sel seo ses sla slc sle sll slo sls soa soc soe sol soo sos ss- ssa ssc sse ssl sso sss