-up ddd ddf ddn ddp dds ddu dfd dff dfn dfp dfs dfu dnd dnf dnn dnp dns dpd dpf dpn dpp dps dpu dsd dsf dsn dsp dss dsu dud duf dun dup dus fdd fdf fdn fdp fds fdu ffd fff ffn ffp ffs ffu fnd fnf fnn fnp fns fnu fpd fpn fpp fps fpu fsd fsf fsn fsp fss fsu fud fuf fun fup fus fuu ndd ndf ndn ndp nds ndu nfd nff nfn nfp nfs nfu nnf nnn nnp nns nnu npd npf npn npp nps npu nsd nsf nsn nsp nss nsu nud nun nup nus nuu p-p pdd pdf pdn pdp pds pdu pfd pff pfn pfp pfs pfu pn- pnd pnf pnn pnp pns pnu ppd ppf ppn ppp pps ppu ps- psd psf psn psp pss psu pud puf pun pup pus puu sdd sdf sdn sdp sds sdu sfd sff sfn sfp sfs sfu snd snf snn snp sns snu spd spf spn spp sps spu ss- ssd ssf ssn ssp sss ssu sud suf sun sup sus suu udd udf udn udp uds udu ufd uff ufn ufp ufs ufu un- und unf unn unp uns unu up- upd upf upn upp ups upu usd usf usn usp uss usu uun uus uuu