a-a a-z aaa aaf aam aan aao aar aas aaz af- afa aff afm afn afo afr afs afz ama amf amm amn amo amr ams amz an- ana anf anm ann ano anr ans anz aoa aof aom aon aoo aor aos ar- ara arf arm arn aro arr ars arz as- asa asf asm asn aso asr ass asz az- aza azf azm azn azo azs azz faa faf fam fan fao far fas faz ffa fff ffm ffn ffo ffr ffs ffz fma fmf fmm fmn fmo fmr fms fna fnf fnm fnn fnr fns fnz foa fof fom fon foo for fos foz fra frf frm frn fro frr frs fsa fsf fsm fsn fso fsr fss m-f m-o m-r maa maf mam man mao mar mas maz mfa mff mfm mfn mfo mfr mfs mfz mma mmf mmm mmn mmo mmr mms mmz mna mnf mnm mnn mno mnr mns mnz moa mof mom mon moo mor mos moz mra mrf mrm mrn mro mrr mrs mrz msa msf msm msn mso msr mss mza mzf mzm mzn naa naf nam nan nao nar nas naz nfa nff nfn nfo nfr nfs nma nmm nmn nmo nmr nms nmz nna nnf nnm nnn nno nns nnz no- noa nof nom non noo nor nos noz nra nrf nrm nrn nro nrr nrs nrz nsa nsf nsm nsn nso nsr nss nsz nzf nzo nzs nzz oaa oaf oam oan oao oar oas of- ofa off ofm ofn ofo ofr ofs ofz om- oma omf omm omn omo omr oms omz on- ona onf onn ono onr ons oo- ooa oof oom oon ooo oor oos or- ora orf orm orn oro orr ors orz os- osa osf osm osn oso osr oss oza ozm ozo ozs ozz ra- raa raf ram ran rao rar ras raz rfa rff rfm rfn rfo rfr rfs rfz rma rmf rmm rmn rmo rmr rms rna rnm rnn rno rnr rns rnz roa rof rom ron roo ror ros roz rra rrf rrm rrn rrr rrs rsa rsf rsm rsn rso rsr rss rza rzm rzo saa saf sam san sao sar sas saz sfa sff sfm sfn sfo sfr sfs sfz sma smf smm smn smo smr sms smz sna snf snm snn sno snr sns soa sof som son soo sor sos soz sr- sra srf srm srn sro srr srs ss- ssa ssf ssm ssn sso ssr sss ssz sza szr zaa zaf zam zan zao zar zas zaz zfa zfn zfr zfs zma zmm zms znn zno zns zo- zoa zof zom zon zoo zor zos zro zrs zsa zsm zsz zzr zzs zzz