a-a aaa aad aaf aam aao aar ad- ada add adf adm ado adr af- afa afd aff afm afo afr ama amd amf amm amo amr aoa aod aof aom aoo aor ar- ara ard arf arm aro arr daa dad daf dam dao dar dda ddd ddf ddm ddo ddr dfa dfd dff dfm dfo dfr dma dmd dmf dmm dmo dmr doa dod dof dom doo dor dra drd drm dro drr faa fad faf fam fao far fda fdd fdf fdm fdo fdr ffa ffd fff ffm ffo ffr fma fmd fmf fmm fmo fmr foa fof fom foo for fra frd frf frm fro frr m-f m-o m-r maa mad maf mam mao mar mda mdd mdf mdm mdo mdr mfa mfd mff mfm mfo mfr mma mmd mmf mmm mmo mmr moa mod mof mom moo mor mra mrd mrf mrm mro mrr oaa oad oaf oam oao oar oda odd odf odm odo odr of- ofa ofd off ofm ofo ofr om- oma omd omf omm omo omr oo- ooa ood oof oom ooo oor or- ora ord orf orm oro orr ra- raa rad raf ram rao rar rda rdd rdf rdm rdo rdr rfa rfd rff rfm rfo rfr rma rmd rmf rmm rmo rmr roa rod rof rom roo ror rra rrd rrf rrm rrr