ddd ddl ddn ddp dds ddt dl- dld dll dlp dls dlt dnd dnl dnn dnp dns dnt dpd dpl dpn dpp dps dpt dsd dsl dsn dsp dss dst dtd dtl dtn dtp dts dtt l-p ldd ldl ldn ldp lds ldt lld lll lln llp lls llt lnd lnl lnn lnp lns lnt lpd lpl lpn lpp lps lpt lsd lsl lsn lsp lss lst ltd ltl ltp lts ltt ndd ndl ndn ndp nds ndt nld nll nln nlp nls nlt nnl nnn nnp nns nnt npd npl npn npp nps npt nsd nsl nsn nsp nss nst ntd ntn ntp nts ntt p-p pdd pdl pdn pdp pds pdt pld pll pln plp pls plt pn- pnd pnl pnn pnp pns pnt ppd ppl ppn ppp pps ppt ps- psd psl psn psp pss pst pt- ptd ptl ptn ptp pts ptt sdd sdl sdn sdp sds sdt sld sll sln slp sls slt snd snl snn snp sns snt spd spl spn spp sps spt ss- ssd ssl ssn ssp sss sst std stl stn stp sts stt tdd tdl tdn tdp tds tdt tld tll tln tlp tls tlt tnd tnl tnn tnp tns tnt tpd tpl tpn tpp tps tpt tsd tsl tsn tsp tss tst ttd ttl ttn ttp tts ttt