-al a-a a-t aaa aaf aag aal aat af- afa aff afg afl aft ag- aga agf agg agl agt al- ala alf alg all alt at- ata atf atg atl att faa faf fag fal fat ffa fff ffg ffl fft fga fgf fgg fgl fgt fla flf flg fll flt fta ftf ftg ftl ftt gaa gaf gag gal gat gfa gff gfl gft gga ggg ggt gla glf glg gll glt gta gtf gtg gtl gtt la- laa laf lag lal lat lfa lff lfg lfl lft lga lgf lgg lgl lgt lla llf llg lll llt lta ltf ltg ltl ltt taa taf tag tal tat tfa tff tfg tfl tft tga tgf tgg tgl tgt tla tlf tlg tll tlt tta ttf ttg ttl ttt