ddd ddi ddm ddo ddr ddx di- did dii dim dio dir dix dmd dmi dmm dmo dmr dmx dod doi dom doo dor dox drd dri drm dro drr drx dxd dxi dxo dxr dxx i-d idd idi idm ido idr idx iid iii iim iio iir iix im- imd imi imm imo imx io- iod ioi iom ioo ior ir- ird iri irm iro irr irx ixi m-o m-r mdd mdi mdm mdo mdr mdx mi- mid mii mim mio mir mix mmd mmi mmm mmo mmr mmx mod moi mom moo mor mox mrd mri mrm mro mrr mrx mxd mxi mxr o-i odd odi odm odo odr oid oii oim oio oir om- omd omi omm omo omr omx oo- ood ooi oom ooo oor oox or- ord ori orm oro orr orx ox- oxi oxo oxx rdd rdi rdm rdo rdr rdx rid rii rim rio rir rix rmd rmi rmm rmo rmr rmx rod roi rom roo ror rox rrd rri rrm rrr rxr xdi xdm xdr xii xio xix xmd xmi xmm xmo xmr xmx xod xoi xom xoo xor xox xrd xrx xxi xxo xxx