-up ddd ddi ddn ddp dds ddu di- did dii din dip dis diu dnd dni dnn dnp dns dpd dpi dpn dpp dps dpu dsd dsi dsn dsp dss dsu dud dui dun dup dus i-d idd idi idn idp ids idu iid iii iin iip iis iiu in- ind ini inn inp ins inu ipd ipi ipn ipp ips ipu is- isd isi isn isp iss isu iu- iud iui iup ius n-i ndd ndi ndn ndp nds ndu nid nii nin nip nis niu nni nnn nnp nns nnu npd npi npn npp nps npu nsd nsi nsn nsp nss nsu nud nui nun nup nus nuu p-p pdd pdi pdn pdp pds pdu pid pii pin pip pis piu pn- pnd pni pnn pnp pns pnu ppd ppi ppn ppp pps ppu ps- psd psi psn psp pss psu pud pui pun pup pus puu sdd sdi sdn sdp sds sdu sid sii sin sip sis siu snd sni snn snp sns snu spd spi spn spp sps spu ss- ssd ssi ssn ssp sss ssu sud sui sun sup sus suu udd udi udn udp uds udu uid uii uin uip uis uiu un- und uni unn unp uns unu up- upd upi upn upp ups upu usd usi usn usp uss usu uun uus uuu