ddd ddi ddm ddo ddp ddr ddx di- did dii dim dio dip dir dix dmd dmi dmm dmo dmp dmr dmx dod doi dom doo dop dor dox dpd dpi dpm dpo dpp dpr drd dri drm dro drp drr drx dxd dxi dxo dxp dxr dxx i-d idd idi idm ido idp idr idx iid iii iim iio iip iir iix im- imd imi imm imo imp imx io- iod ioi iom ioo iop ior ipd ipi ipm ipo ipp ipr ipx ir- ird iri irm iro irp irr irx ixi m-o m-r mdd mdi mdm mdo mdp mdr mdx mi- mid mii mim mio mip mir mix mmd mmi mmm mmo mmp mmr mmx mod moi mom moo mop mor mox mpd mpi mpm mpo mpp mpr mpx mrd mri mrm mro mrp mrr mrx mxd mxi mxp mxr o-i odd odi odm odo odp odr oid oii oim oio oip oir om- omd omi omm omo omp omr omx oo- ood ooi oom ooo oop oor oox op- opd opi opm opo opp opr opx or- ord ori orm oro orp orr orx ox- oxi oxo oxx p-p pdd pdi pdm pdo pdp pdr pdx pid pii pim pio pip pir pix pmd pmi pmm pmo pmp pmr pmx pod poi pom poo pop por pox ppd ppi ppm ppo ppp ppr ppx prd pri prm pro prp prr prx pxm pxr rdd rdi rdm rdo rdp rdr rdx rid rii rim rio rip rir rix rmd rmi rmm rmo rmp rmr rmx rod roi rom roo rop ror rox rpd rpi rpm rpo rpp rpr rpx rrd rri rrm rrp rrr rxp rxr xdi xdm xdr xii xio xix xmd xmi xmm xmo xmp xmr xmx xod xoi xom xoo xop xor xox xpd xpm xpo xpp xrd xrx xxi xxo xxp xxx