a-a aaa aaf aag aam aas af- afa aff afg afm afs ag- aga agf agg agm ags ama amf amg amm ams as- asa asf asg asm ass faa faf fag fam fas ffa fff ffg ffm ffs fga fgf fgg fgm fgs fma fmf fmg fmm fms fsa fsf fsg fsm fss gaa gaf gag gam gas gfa gff gfm gfs gga ggg ggm ggs gma gmf gmg gmm gms gsa gsf gsg gsm gss m-f maa maf mag mam mas mfa mff mfg mfm mfs mga mgf mgm mgs mma mmf mmg mmm mms msa msf msg msm mss saa saf sag sam sas sfa sff sfg sfm sfs sga sgf sgg sgm sgs sma smf smg smm sms ss- ssa ssf ssg ssm sss