-al -ol a-a aaa aaf aag aal aan aao aas af- afa aff afg afl afn afo afs ag- aga agf agg agl agn ago ags al- ala alf alg all aln alo als an- ana anf ang anl ann ano ans aoa aof aog aol aon aoo aos as- asa asf asg asl asn aso ass faa faf fag fal fan fao fas ffa fff ffg ffl ffn ffo ffs fga fgf fgg fgl fgn fgs fla flf flg fll fln flo fls fna fnf fng fnl fnn fns foa fof fog fol fon foo fos fsa fsf fsg fsl fsn fso fss gaa gaf gag gal gan gao gas gfa gff gfl gfo gfs gga ggg ggn ggo ggs gla glf glg gll gln glo gls gna gnf gnl gnn gno gns goa gof gog gol gon goo gos gsa gsf gsg gsl gsn gso gss la- laa laf lag lal lan lao las lfa lff lfg lfl lfn lfo lfs lga lgf lgg lgl lgn lgo lgs lla llf llg lll lln llo lls lna lng lnl lnn lno lns loa lof log lol lon loo los lsa lsf lsg lsl lsn lso lss naa naf nag nal nan nao nas nfa nff nfl nfn nfo nfs nga ngf ngg ngl ngn ngo ngs nla nlf nlg nll nln nlo nls nna nnf nng nnl nnn nno nns no- noa nof nog nol non noo nos nsa nsf nsg nsl nsn nso nss oaa oaf oag oal oan oao oas of- ofa off ofg ofl ofn ofo ofs oga ogf ogg ogl ogn ogo ogs ola olf olg oll oln olo ols on- ona onf ong onl onn ono ons oo- ooa oof oog ool oon ooo oos os- osa osf osg osl osn oso oss saa saf sag sal san sao sas sfa sff sfg sfl sfn sfo sfs sga sgf sgg sgl sgn sgo sgs sla slf slg sll sln slo sls sna snf sng snl snn sno sns soa sof sog sol son soo sos ss- ssa ssf ssg ssl ssn sso sss