-up c-- ccc ccf cck cco ccp cct ccu cfc cff cfk cfo cfp cft cfu ckc cko ckt co- coc cof cok coo cop cot cou cpc cpf cpk cpo cpp cpt cpu ctc ctf ctk cto ctp ctt ctu cuc cuf cuk cuo cup cut cuu fcc fcf fck fco fcp fct fcu ffc fff ffk ffo ffp fft ffu fkc fkf fkk fkp fkt foc fof fok foo fop fot fou fpc fpk fpo fpp fpt fpu ftc ftf ftk fto ftp ftt ftu fuf fuk fuo fup fut fuu k-t kcc kck kcp kct kcu kfc kff kfo kfu kkc kkk kkp kkt kku koc kof kok koo kop kot kou kpc kpf kpk kpo kpp kpt kpu ktc ktf ktk kto ktp ktt ktu kuc kuk kup kut kuu oc- occ ocf ock oco ocp oct ocu of- ofc off ofo ofp oft ofu okc okk oko okp oku oo- ooc oof ook ooo oop oot op- opc opf opk opo opp opt ot- otc otf otk oto otp ott otu ou- ouc ouf ouk ouo oup out p-p pcc pcf pck pco pcp pct pcu pfc pff pfk pfo pfp pft pfu pkc pkf pko pkp pkt pku poc pof pok poo pop pot pou ppc ppf ppk ppo ppp ppt ppu pt- ptc ptf ptk pto ptp ptt ptu puc puf puk pup put puu tcc tcf tck tco tcp tct tcu tfc tff tfk tfo tfp tft tfu tkc tkk tko tkp tkt to- toc tof tok too top tot tou tpc tpf tpk tpo tpp tpt tpu ttc ttf ttk tto ttp ttt ttu tuc tuf tuk tuo tup tut tuu ucc ucf uck uco ucp uct ucu ufc uff ufo ufp uft ufu ukc ukf ukk ukp uku uoc uok uoo uop uot up- upc upf upk upo upp upt upu utc utf utk uto utp utt utu uuc uut uuu