-up ddd dde ddp dds ddu de- ded dee dep des deu dpd dpe dpp dps dpu dsd dse dsp dss dsu dud due dup dus ed- edd ede edp eds edu eed eee eep ees ep- epd epe epp eps epu es- esd ese esp ess esu eu- eud eue eup eus p-p pdd pde pdp pds pdu ped pee pep pes peu ppd ppe ppp pps ppu ps- psd pse psp pss psu pud pue pup pus puu sdd sde sdp sds sdu se- sed see sep ses seu spd spe spp sps spu ss- ssd sse ssp sss ssu sud sue sup sus suu udd ude udp uds udu ued uee uep ues up- upd upe upp ups upu usd use usp uss usu uue uus uuu