ddd ddi ddn ddo ddp ddr dds di- did dii din dio dip dir dis dnd dni dnn dno dnp dnr dns dod doi don doo dop dor dos dpd dpi dpn dpo dpp dpr dps drd dri drn dro drp drr drs dsd dsi dsn dso dsp dsr dss i-d idd idi idn ido idp idr ids iid iii iin iio iip iir iis in- ind ini inn ino inp inr ins io- iod ioi ion ioo iop ior ios ipd ipi ipn ipo ipp ipr ips ir- ird iri irn iro irp irr irs is- isd isi isn iso isp isr iss n-i ndd ndi ndn ndo ndp ndr nds nid nii nin nio nip nir nis nni nnn nno nnp nns no- nod noi non noo nop nor nos npd npi npn npo npp npr nps nrd nri nrn nro nrp nrr nrs nsd nsi nsn nso nsp nsr nss o-i odd odi odn odo odp odr ods oid oii oin oio oip oir ois on- ond oni onn ono onp onr ons oo- ood ooi oon ooo oop oor oos op- opd opi opn opo opp opr ops or- ord ori orn oro orp orr ors os- osd osi osn oso osp osr oss p-p pdd pdi pdn pdo pdp pdr pds pid pii pin pio pip pir pis pn- pnd pni pnn pno pnp pnr pns pod poi pon poo pop por pos ppd ppi ppn ppo ppp ppr pps prd pri prn pro prp prr prs ps- psd psi psn pso psp psr pss rdd rdi rdn rdo rdp rdr rds rid rii rin rio rip rir ris rnd rni rnn rno rnp rnr rns rod roi ron roo rop ror ros rpd rpi rpn rpo rpp rpr rps rrd rri rrn rrp rrr rrs rsd rsi rsn rso rsp rsr rss sdd sdi sdn sdo sdp sdr sds sid sii sin sio sip sir sis snd sni snn sno snp snr sns sod soi son soo sop sor sos spd spi spn spo spp spr sps sr- srd sri srn sro srp srr srs ss- ssd ssi ssn sso ssp ssr sss