ddd ddf ddi ddm ddo ddp ddr dds dfd dff dfi dfm dfo dfp dfr dfs di- did dif dii dim dio dip dir dis dmd dmf dmi dmm dmo dmp dmr dms dod dof doi dom doo dop dor dos dpd dpf dpi dpm dpo dpp dpr dps drd dri drm dro drp drr drs dsd dsf dsi dsm dso dsp dsr dss fdd fdf fdi fdm fdo fdp fdr fds ffd fff ffi ffm ffo ffp ffr ffs fid fif fii fim fip fir fis fmd fmf fmi fmm fmo fmp fmr fms fof foi fom foo fop for fos fpd fpi fpm fpo fpp fpr fps frd frf fri frm fro frp frr frs fsd fsf fsi fsm fso fsp fsr fss i-d i-f idd idf idi idm ido idp idr ids ifd iff ifi ifm ifo ifp ifr ifs iid iif iii iim iio iip iir iis im- imd imf imi imm imo imp ims io- iod iof ioi iom ioo iop ior ios ipd ipf ipi ipm ipo ipp ipr ips ir- ird irf iri irm iro irp irr irs is- isd isf isi ism iso isp isr iss m-f m-o m-r mdd mdf mdi mdm mdo mdp mdr mds mfd mff mfi mfm mfo mfp mfr mfs mi- mid mif mii mim mio mip mir mis mmd mmf mmi mmm mmo mmp mmr mms mod mof moi mom moo mop mor mos mpd mpf mpi mpm mpo mpp mpr mps mrd mrf mri mrm mro mrp mrr mrs msd msf msi msm mso msp msr mss o-i odd odf odi odm odo odp odr ods of- ofd off ofi ofm ofo ofp ofr ofs oid oif oii oim oio oip oir ois om- omd omf omi omm omo omp omr oms oo- ood oof ooi oom ooo oop oor oos op- opd opf opi opm opo opp opr ops or- ord orf ori orm oro orp orr ors os- osd osf osi osm oso osp osr oss p-p pdd pdf pdi pdm pdo pdp pdr pds pfd pff pfi pfm pfo pfp pfr pfs pid pif pii pim pio pip pir pis pmd pmf pmi pmm pmo pmp pmr pms pod pof poi pom poo pop por pos ppd ppf ppi ppm ppo ppp ppr pps prd prf pri prm pro prp prr prs ps- psd psf psi psm pso psp psr pss rdd rdf rdi rdm rdo rdp rdr rds rfd rff rfi rfm rfo rfp rfr rfs rid rif rii rim rio rip rir ris rmd rmf rmi rmm rmo rmp rmr rms rod rof roi rom roo rop ror ros rpd rpf rpi rpm rpo rpp rpr rps rrd rrf rri rrm rrp rrr rrs rsd rsf rsi rsm rso rsp rsr rss sdd sdf sdi sdm sdo sdp sdr sds sfd sff sfi sfm sfo sfp sfr sfs sid sif sii sim sio sip sir sis smd smf smi smm smo smp smr sms sod sof soi som soo sop sor sos spd spf spi spm spo spp spr sps sr- srd srf sri srm sro srp srr srs ss- ssd ssf ssi ssm sso ssp ssr sss