k-t kkk kkp kks kkt kky kok koo kop kos kot koy kpk kpo kpp kps kpt ksk kso ksp kss kst ktk kto ktp kts ktt kyo kyp kys kyt okk oko okp oks oo- ook ooo oop oos oot op- opk opo opp ops opt opy os- osk oso osp oss ost ot- otk oto otp ots ott oyo oys p-p pko pkp pks pkt pky pok poo pop pos pot poy ppk ppo ppp pps ppt ps- psk pso psp pss pst psy pt- ptk pto ptp pts ptt pty py- pyk pyo pys pyt sk- skk sko skp sks skt sky sok soo sop sos sot soy spk spo spp sps spt spy ss- ssk sso ssp sss sst stk sto stp sts stt sty sy- syk syp sys syt tkk tko tkp tks tkt tky to- tok too top tos tot toy tpk tpo tpp tps tpt tsk tso tsp tss tst tsy ttk tto ttp tts ttt tty tyo typ tys tyt ykk yok yoo yop yos yot yoy ypo yps ysk yso ysp yss yst ysy ytk yto ytp yts ytt yys yyt yyy