ddd ddi ddm ddn ddo ddp dds di- did dii dim din dio dip dis dmd dmi dmm dmn dmo dmp dms dnd dni dnm dnn dno dnp dns dod doi dom don doo dop dos dpd dpi dpm dpn dpo dpp dps dsd dsi dsm dsn dso dsp dss i-d idd idi idm idn ido idp ids iid iii iim iin iio iip iis im- imd imi imm imn imo imp ims in- ind ini inm inn ino inp ins io- iod ioi iom ion ioo iop ios ipd ipi ipm ipn ipo ipp ips is- isd isi ism isn iso isp iss m-o mdd mdi mdm mdn mdo mdp mds mi- mid mii mim min mio mip mis mmd mmi mmm mmn mmo mmp mms mni mnm mnn mno mnp mns mod moi mom mon moo mop mos mpd mpi mpm mpn mpo mpp mps msd msi msm msn mso msp mss n-i ndd ndi ndm ndn ndo ndp nds nid nii nim nin nio nip nis nmd nmi nmm nmn nmo nmp nms nni nnm nnn nno nnp nns no- nod noi nom non noo nop nos npd npi npm npn npo npp nps nsd nsi nsm nsn nso nsp nss o-i odd odi odm odn odo odp ods oid oii oim oin oio oip ois om- omd omi omm omn omo omp oms on- ond oni onn ono onp ons oo- ood ooi oom oon ooo oop oos op- opd opi opm opn opo opp ops os- osd osi osm osn oso osp oss p-p pdd pdi pdm pdn pdo pdp pds pid pii pim pin pio pip pis pmd pmi pmm pmn pmo pmp pms pn- pnd pni pnm pnn pno pnp pns pod poi pom pon poo pop pos ppd ppi ppm ppn ppo ppp pps ps- psd psi psm psn pso psp pss sdd sdi sdm sdn sdo sdp sds sid sii sim sin sio sip sis smd smi smm smn smo smp sms snd sni snm snn sno snp sns sod soi som son soo sop sos spd spi spm spn spo spp sps ss- ssd ssi ssm ssn sso ssp sss