-al a-a a-c a-t aaa aac aaf aal aat ac- aca acc acf acl act af- afa afc aff afl aft al- ala alc alf all alt at- ata atc atf atl att c-- caa cac caf cal cat cca ccc ccf ccl cct cfa cfc cff cfl cft cl- cla clc clf cll clt cta ctc ctf ctl ctt faa fac faf fal fat fca fcc fcf fcl fct ffa ffc fff ffl fft fla flc flf fll flt fta ftc ftf ftl ftt la- laa lac laf lal lat lca lcc lcf lcl lct lfa lfc lff lfl lft lla llc llf lll llt lta ltc ltf ltl ltt taa tac taf tal tat tca tcc tcf tcl tct tfa tfc tff tfl tft tla tlc tlf tll tlt tta ttc ttf ttl ttt