a-a aaa aaf aam aan aar aau af- afa aff afm afn afr afu ama amf amm amn amr amu an- ana anf anm ann anr anu ar- ara arf arm arn arr aru au- aua auf aum aun aur faa faf fam fan far fau ffa fff ffm ffn ffr ffu fma fmf fmm fmn fmr fmu fna fnf fnm fnn fnr fnu fra frf frm frn frr fru fua fuf fum fun fur fuu m-f m-r maa maf mam man mar mau mfa mff mfm mfn mfr mfu mma mmf mmm mmn mmr mmu mna mnf mnm mnn mnr mnu mra mrf mrm mrn mrr mru mua muf mum mun mur muu naa naf nam nan nar nau nfa nff nfn nfr nfu nma nmm nmn nmr nmu nna nnf nnm nnn nnu nra nrf nrm nrn nrr nru nua num nun nur nuu ra- raa raf ram ran rar rau rfa rff rfm rfn rfr rfu rma rmf rmm rmn rmr rna rnm rnn rnr rnu rra rrf rrm rrn rrr rru rua ruf rum run rur ruu ua- uaa uaf uam uan uar uau ufa uff ufm ufn ufr ufu um- uma umf umm umn umr umu un- una unf unm unn unr unu ur- ura urf urm urn urr uru uua uum uun uur uuu