a-a aaa aaf aag aah aan aas af- afa aff afg afh afn afs ag- aga agf agg agh agn ags aha ahf ahg ahh ahn ahs an- ana anf ang anh ann ans as- asa asf asg ash asn ass faa faf fag fah fan fas ffa fff ffg ffh ffn ffs fga fgf fgg fgh fgn fgs fha fhf fhg fhh fhn fhs fna fnf fng fnh fnn fns fsa fsf fsg fsh fsn fss gaa gaf gag gah gan gas gfa gff gfh gfs gga ggg ggh ggn ggs gha ghg ghh ghn ghs gna gnf gnn gns gsa gsf gsg gsn gss haa haf hag hah han has hfa hff hfg hfh hfn hfs hga hgf hgg hgh hgn hgs hha hhf hhg hhh hhn hhs hna hnf hng hnh hnn hns hsa hsf hsg hsh hsn hss naa naf nag nah nan nas nfa nff nfn nfs nga ngf ngg ngh ngn ngs nha nhf nhg nhh nhn nhs nna nnf nng nnh nnn nns nsa nsf nsg nsh nsn nss saa saf sag sah san sas sfa sff sfg sfh sfn sfs sga sgf sgg sgh sgn sgs sh- sha shf shg shh shn shs sna snf sng snn sns ss- ssa ssf ssg ssh ssn sss