-up ddd ddn ddp ddr dds ddu dnd dnn dnp dnr dns dpd dpn dpp dpr dps dpu drd drn drp drr drs dru dsd dsn dsp dsr dss dsu dud dun dup dur dus ndd ndn ndp ndr nds ndu nnn nnp nns nnu npd npn npp npr nps npu nrd nrn nrp nrr nrs nru nsd nsn nsp nsr nss nsu nud nun nup nur nus nuu p-p pdd pdn pdp pdr pds pdu pn- pnd pnn pnp pnr pns pnu ppd ppn ppp ppr pps ppu prd prn prp prr prs pru ps- psd psn psp psr pss psu pud pun pup pur pus puu rdd rdn rdp rdr rds rdu rnd rnn rnp rnr rns rnu rpd rpn rpp rpr rps rpu rrd rrn rrp rrr rrs rru rsd rsn rsp rsr rss rsu rud run rup rur rus ruu sdd sdn sdp sdr sds sdu snd snn snp snr sns snu spd spn spp spr sps spu sr- srd srn srp srr srs ss- ssd ssn ssp ssr sss ssu sud sun sup sur sus suu udd udn udp udr uds udu un- und unn unp unr uns unu up- upd upn upp upr ups upu ur- urd urn urp urr urs uru usd usn usp usr uss usu uun uur uus uuu