-al -ol a-a aaa aaf aal aan aao af- afa aff afl afn afo al- ala alf all aln alo an- ana anf anl ann ano aoa aof aol aon aoo faa faf fal fan fao ffa fff ffl ffn ffo fla flf fll fln flo fna fnf fnl fnn foa fof fol fon foo la- laa laf lal lan lao lfa lff lfl lfn lfo lla llf lll lln llo lna lnl lnn lno loa lof lol lon loo naa naf nal nan nao nfa nff nfl nfn nfo nla nlf nll nln nlo nna nnf nnl nnn nno no- noa nof nol non noo oaa oaf oal oan oao of- ofa off ofl ofn ofo ola olf oll oln olo on- ona onf onl onn ono oo- ooa oof ool oon ooo