a-a a-z aaa aam aao aar aas aaz ama amm amo amr ams amz aoa aom aoo aor aos ar- ara arm aro arr ars arz as- asa asm aso asr ass asz az- aza azm azo azs azz m-o m-r maa mam mao mar mas maz mma mmm mmo mmr mms mmz moa mom moo mor mos moz mra mrm mro mrr mrs mrz msa msm mso msr mss mza mzm oaa oam oao oar oas om- oma omm omo omr oms omz oo- ooa oom ooo oor oos or- ora orm oro orr ors orz os- osa osm oso osr oss oza ozm ozo ozs ozz ra- raa ram rao rar ras raz rma rmm rmo rmr rms roa rom roo ror ros roz rra rrm rrr rrs rsa rsm rso rsr rss rza rzm rzo saa sam sao sar sas saz sma smm smo smr sms smz soa som soo sor sos soz sr- sra srm sro srr srs ss- ssa ssm sso ssr sss ssz sza szr zaa zam zao zar zas zaz zma zmm zms zo- zoa zom zoo zor zos zro zrs zsa zsm zsz zzr zzs zzz