-al a-a a-c aaa aac aae aaf aal aav ac- aca acc ace acf acl acv aea aec aee aef ael aev af- afa afc afe aff afl afv al- ala alc ale alf all alv av- ava avc ave avf avl c-- caa cac cae caf cal cav cca ccc cce ccf ccl ccv ce- cea cec cee cef cel cev cfa cfc cfe cff cfl cfv cl- cla clc cle clf cll clv cva cvc cve cvf cvl cvv eaa eac eae eaf eal eav ec- eca ecc ece ecf ecl ecv eea eec eee eef eel eev ef- efa efc efe eff efl ela elc ele elf ell elv eva evc eve evf evl evv faa fac fae faf fal fav fca fcc fce fcf fcl fcv fea fec fee fef fel fev ffa ffc ffe fff ffl ffv fla flc fle flf fll fva fvc la- laa lac lae laf lal lav lca lcc lce lcf lcl lcv lea lec lee lef lel lev lfa lfc lfe lff lfl lla llc lle llf lll llv lva lvc lve lvf lvl lvv v-a v-e vaa vac vae val vav vca vcc vce vcf vcl vea vec vee vef vel vfa vfc vff vfl vfv vl- vla vlc vle vlf vll vlv vva vvc vvv