-al -ol a-a aaa aaf aag aal aan aao af- afa aff afg afl afn afo ag- aga agf agg agl agn ago al- ala alf alg all aln alo an- ana anf ang anl ann ano aoa aof aog aol aon aoo faa faf fag fal fan fao ffa fff ffg ffl ffn ffo fga fgf fgg fgl fgn fla flf flg fll fln flo fna fnf fng fnl fnn foa fof fog fol fon foo gaa gaf gag gal gan gao gfa gff gfl gfo gga ggg ggn ggo gla glf glg gll gln glo gna gnf gnl gnn gno goa gof gog gol gon goo la- laa laf lag lal lan lao lfa lff lfg lfl lfn lfo lga lgf lgg lgl lgn lgo lla llf llg lll lln llo lna lng lnl lnn lno loa lof log lol lon loo naa naf nag nal nan nao nfa nff nfl nfn nfo nga ngf ngg ngl ngn ngo nla nlf nlg nll nln nlo nna nnf nng nnl nnn nno no- noa nof nog nol non noo oaa oaf oag oal oan oao of- ofa off ofg ofl ofn ofo oga ogf ogg ogl ogn ogo ola olf olg oll oln olo on- ona onf ong onl onn ono oo- ooa oof oog ool oon ooo