-ol -up l-p lll llo llp lls llt llu lol loo lop los lot lou lpl lpo lpp lps lpt lpu lsl lso lsp lss lst lsu ltl lto ltp lts ltt ltu lul luo lup lus lut luu oll olo olp ols olt olu oo- ool ooo oop oos oot op- opl opo opp ops opt os- osl oso osp oss ost osu ot- otl oto otp ots ott otu ou- oul ouo oup ous out p-p pll plo plp pls plt plu pol poo pop pos pot pou ppl ppo ppp pps ppt ppu ps- psl pso psp pss pst psu pt- ptl pto ptp pts ptt ptu pul pup pus put puu sll slo slp sls slt slu sol soo sop sos sot sou spl spo spp sps spt spu ss- ssl sso ssp sss sst ssu stl sto stp sts stt stu sul suo sup sus sut suu tll tlo tlp tls tlt tlu to- tol too top tos tot tou tpl tpo tpp tps tpt tpu tsl tso tsp tss tst tsu ttl tto ttp tts ttt ttu tul tuo tup tus tut tuu ull ulo ulp uls ult ulu uol uoo uop uos uot up- upo upp ups upt upu usl uso usp uss ust usu utl uto utp uts utt utu uus uut uuu