a-a aaa aad aaf aam aar ad- ada add adf adm adr af- afa afd aff afm afr ama amd amf amm amr ar- ara ard arf arm arr daa dad daf dam dar dda ddd ddf ddm ddr dfa dfd dff dfm dfr dma dmd dmf dmm dmr dra drd drm drr faa fad faf fam far fda fdd fdf fdm fdr ffa ffd fff ffm ffr fma fmd fmf fmm fmr fra frd frf frm frr m-f m-r maa mad maf mam mar mda mdd mdf mdm mdr mfa mfd mff mfm mfr mma mmd mmf mmm mmr mra mrd mrf mrm mrr ra- raa rad raf ram rar rda rdd rdf rdm rdr rfa rfd rff rfm rfr rma rmd rmf rmm rmr rra rrd rrf rrm rrr