ddd ddp dds ddt dpd dpp dps dpt dsd dsp dss dst dtd dtp dts dtt p-p pdd pdp pds pdt ppd ppp pps ppt ps- psd psp pss pst pt- ptd ptp pts ptt sdd sdp sds sdt spd spp sps spt ss- ssd ssp sss sst std stp sts stt tdd tdp tds tdt tpd tpp tps tpt tsd tsp tss tst ttd ttp tts ttt

dddd ddps ddss ddts dpdt dpsd dpst dpts dsdp dsps dspt dssp dsst dsts dtdp dtss dttp pdsd pdss ppds pppd pppp ppps ppss ppts pptt psdp psds pspp psps psst psts ptpd sdds sdps sdss spdp spdt sppd spps spsd spsp spss spst spts ssdd ssdp ssps sspt ssss sstd sstp ssts stds stpd stpp stps stss sttd tdss tppd tppp tptp tsps tspt tsst tsts ttss tttt

ddddd pssst pssts sssss tppts ttttt

pppppp ppsspp

sssssss

psssssst

ddddddddd