-up c-- ccc ccd cce ccp ccs ccu cdc cdd cde cdp cds cdu ce- cec ced cee cep ces ceu cpc cpd cpe cpp cps cpu csc csd cse csp css csu cuc cud cue cup cus cuu dcc dcd dce dcp dcs dcu ddc ddd dde ddp dds ddu de- dec ded dee dep des deu dpc dpd dpe dpp dps dpu dsc dsd dse dsp dss dsu duc dud due dup dus ec- ecc ecd ece ecs ecu ed- edc edd ede edp eds edu eec eed eee eep ees ep- epc epd epe epp eps epu es- esc esd ese esp ess esu eu- euc eud eue eup eus p-p pcc pcd pce pcp pcs pcu pdc pdd pde pdp pds pdu pec ped pee pep pes peu ppc ppd ppe ppp pps ppu ps- psc psd pse psp pss psu puc pud pue pup pus puu scc scd sce scp scs scu sdc sdd sde sdp sds sdu se- sec sed see sep ses seu spc spd spe spp sps spu ss- ssc ssd sse ssp sss ssu suc sud sue sup sus suu ucc ucd uce ucp ucs ucu udc udd ude udp uds udu uec ued uee uep ues up- upc upd upe upp ups upu usc usd use usp uss usu uuc uue uus uuu