-up k-t kkk kkp kks kkt kku kkv kok koo kop kos kot kou kpk kpo kpp kps kpt kpu kpv ksk kso ksp kss kst ksu ksv ktk kto ktp kts ktt ktu ktv kuk kup kus kut kuu kvk kvo kvp kvs kvv okk oko okp oks oku oo- ook ooo oop oos oot oov op- opk opo opp ops opt opv os- osk oso osp oss ost osu osv ot- otk oto otp ots ott otu otv ou- ouk ouo oup ous out ov- ovo ovp ovs ovv p-p pko pkp pks pkt pku pok poo pop pos pot pou pov ppk ppo ppp pps ppt ppu ppv ps- psk pso psp pss pst psu psv pt- ptk pto ptp pts ptt ptu ptv puk pup pus put puu pvk pvo pvp pvs pvt pvu pvv sk- skk sko skp sks skt sku sok soo sop sos sot sou sov spk spo spp sps spt spu spv ss- ssk sso ssp sss sst ssu ssv stk sto stp sts stt stu stv suk suo sup sus sut suu suv svk svo svp svs svt svu svv tkk tko tkp tks tkt to- tok too top tos tot tou tov tpk tpo tpp tps tpt tpu tpv tsk tso tsp tss tst tsu tsv ttk tto ttp tts ttt ttu ttv tuk tuo tup tus tut tuu tuv tvk tvo tvp tvs tvt tvu ukk ukp uku uok uoo uop uos uot up- upk upo upp ups upt upu upv usk uso usp uss ust usu usv utk uto utp uts utt utu utv uus uut uuu uvo uvs uvu uvv vkp vkt vok voo vop vos vot vou vov vpk vpo vpp vps vpt vpu vsk vso vsp vss vst vsu vsv vtk vto vts vtt vtu vtv vuk vup vus vut vuv vvo vvs vvt vvv