-al -ol a-a a-c aaa aac aaf aal aan aao ac- aca acc acf acl acn aco af- afa afc aff afl afn afo al- ala alc alf all aln alo an- ana anc anf anl ann ano aoa aoc aof aol aon aoo c-- caa cac caf cal can cao cca ccc ccf ccl ccn cco cfa cfc cff cfl cfn cfo cl- cla clc clf cll cln clo cn- cna cnc cnf cnl cnn cno co- coa coc cof col con coo faa fac faf fal fan fao fca fcc fcf fcl fcn fco ffa ffc fff ffl ffn ffo fla flc flf fll fln flo fna fnc fnf fnl fnn foa foc fof fol fon foo la- laa lac laf lal lan lao lca lcc lcf lcl lcn lco lfa lfc lff lfl lfn lfo lla llc llf lll lln llo lna lnc lnl lnn lno loa loc lof lol lon loo naa nac naf nal nan nao nca ncc ncf ncl ncn nco nfa nfc nff nfl nfn nfo nla nlc nlf nll nln nlo nna nnc nnf nnl nnn nno no- noa noc nof nol non noo oaa oac oaf oal oan oao oc- oca occ ocf ocl ocn oco of- ofa ofc off ofl ofn ofo ola olc olf oll oln olo on- ona onc onf onl onn ono oo- ooa ooc oof ool oon ooo