-up c-- ccc ccd ccp ccs ccu cdc cdd cdp cds cdu cpc cpd cpp cps cpu csc csd csp css csu cuc cud cup cus cuu dcc dcd dcp dcs dcu ddc ddd ddp dds ddu dpc dpd dpp dps dpu dsc dsd dsp dss dsu duc dud dup dus p-p pcc pcd pcp pcs pcu pdc pdd pdp pds pdu ppc ppd ppp pps ppu ps- psc psd psp pss psu puc pud pup pus puu scc scd scp scs scu sdc sdd sdp sds sdu spc spd spp sps spu ss- ssc ssd ssp sss ssu suc sud sup sus suu ucc ucd ucp ucs ucu udc udd udp uds udu up- upc upd upp ups upu usc usd usp uss usu uuc uus uuu