a-a aaa aad aaf aam aao aar aax ad- ada add adf adm ado adr adx af- afa afd aff afm afo afr afx ama amd amf amm amo amr amx aoa aod aof aom aoo aor aox ar- ara ard arf arm aro arr arx ax- axa axm axo axr axx daa dad daf dam dao dar dax dda ddd ddf ddm ddo ddr ddx dfa dfd dff dfm dfo dfr dfx dma dmd dmf dmm dmo dmr dmx doa dod dof dom doo dor dox dra drd drm dro drr drx dxd dxo dxr dxx faa fad faf fam fao far fax fda fdd fdf fdm fdo fdr fdx ffa ffd fff ffm ffo ffr ffx fma fmd fmf fmm fmo fmr fmx foa fof fom foo for fox fra frd frf frm fro frr fxm fxr fxx m-f m-o m-r maa mad maf mam mao mar max mda mdd mdf mdm mdo mdr mdx mfa mfd mff mfm mfo mfr mma mmd mmf mmm mmo mmr mmx moa mod mof mom moo mor mox mra mrd mrf mrm mro mrr mrx mxa mxd mxr oaa oad oaf oam oao oar oax oda odd odf odm odo odr of- ofa ofd off ofm ofo ofr ofx om- oma omd omf omm omo omr omx oo- ooa ood oof oom ooo oor oox or- ora ord orf orm oro orr orx ox- oxa oxf oxo oxx ra- raa rad raf ram rao rar rax rda rdd rdf rdm rdo rdr rdx rfa rfd rff rfm rfo rfr rma rmd rmf rmm rmo rmr rmx roa rod rof rom roo ror rox rra rrd rrf rrm rrr rxr xaa xad xaf xam xar xda xdf xdm xdr xfa xfm xfx xma xmd xmf xmm xmo xmr xmx xoa xod xof xom xoo xor xox xrd xrf xrx xxo xxx