-up c-- ccc cco ccp ccs cct ccu co- coc coo cop cos cot cou cpc cpo cpp cps cpt cpu csc cso csp css cst csu ctc cto ctp cts ctt ctu cuc cuo cup cus cut cuu oc- occ oco ocp ocs oct ocu oo- ooc ooo oop oos oot op- opc opo opp ops opt os- osc oso osp oss ost osu ot- otc oto otp ots ott otu ou- ouc ouo oup ous out p-p pcc pco pcp pcs pct pcu poc poo pop pos pot pou ppc ppo ppp pps ppt ppu ps- psc pso psp pss pst psu pt- ptc pto ptp pts ptt ptu puc pup pus put puu scc sco scp scs sct scu soc soo sop sos sot sou spc spo spp sps spt spu ss- ssc sso ssp sss sst ssu stc sto stp sts stt stu suc suo sup sus sut suu tcc tco tcp tcs tct tcu to- toc too top tos tot tou tpc tpo tpp tps tpt tpu tsc tso tsp tss tst tsu ttc tto ttp tts ttt ttu tuc tuo tup tus tut tuu ucc uco ucp ucs uct ucu uoc uoo uop uos uot up- upc upo upp ups upt upu usc uso usp uss ust usu utc uto utp uts utt utu uuc uus uut uuu