-up c-- ccc ccd cco ccp ccs cct ccu cdc cdd cdo cdp cds cdt cdu cdy co- coc cod coo cop cos cot cou coy cpc cpd cpo cpp cps cpt cpu csc csd cso csp css cst csu csy ctc ctd cto ctp cts ctt ctu cty cuc cud cuo cup cus cut cuu cuy cyc cyd cyo cyp cys cyt dcc dcd dco dcp dcs dct dcu ddc ddd ddo ddp dds ddt ddu ddy doc dod doo dop dos dot dou doy dpc dpd dpo dpp dps dpt dpu dsc dsd dso dsp dss dst dsu dsy dtc dtd dto dtp dts dtt dtu dty duc dud duo dup dus dut duy dy- dyc dyd dyo dyp dys dyu dyy oc- occ ocd oco ocp ocs oct ocu odc odd odo odp ods odt odu oo- ooc ood ooo oop oos oot op- opc opd opo opp ops opt opy os- osc osd oso osp oss ost osu ot- otc otd oto otp ots ott otu ou- ouc oud ouo oup ous out oyd oyo oys p-p pcc pcd pco pcp pcs pct pcu pdc pdd pdo pdp pds pdt pdu poc pod poo pop pos pot pou poy ppc ppd ppo ppp pps ppt ppu ps- psc psd pso psp pss pst psu psy pt- ptc ptd pto ptp pts ptt ptu pty puc pud pup pus put puu puy py- pyc pyd pyo pys pyt pyu scc scd sco scp scs sct scu sdc sdd sdo sdp sds sdt sdu sdy soc sod soo sop sos sot sou soy spc spd spo spp sps spt spu spy ss- ssc ssd sso ssp sss sst ssu stc std sto stp sts stt stu sty suc sud suo sup sus sut suu suy sy- syc syd syp sys syt syu tcc tcd tco tcp tcs tct tcu tdc tdd tdo tdp tds tdt tdu tdy to- toc tod too top tos tot tou toy tpc tpd tpo tpp tps tpt tpu tsc tsd tso tsp tss tst tsu tsy ttc ttd tto ttp tts ttt ttu tty tuc tud tuo tup tus tut tuu tuy tyc tyd tyo typ tys tyt ucc ucd uco ucp ucs uct ucu udc udd udo udp uds udt udu uoc uod uoo uop uos uot up- upc upd upo upp ups upt upu usc usd uso usp uss ust usu utc utd uto utp uts utt utu uty uuc uus uut uuu uyc uyo uys uyu ycc ycd yco ycp ycs ycu ycy ydo yds ydt ydy yoc yod yoo yop yos yot you yoy ypd ypo yps ypu ysc yso ysp yss yst ysu ysy ytc ytd yto ytp yts ytt ytu yud yuo yup yus yut yuu yuy yyc yys yyt yyu yyy