-ol -up b-p b-u bbb bbl bbo bbp bbt bbu blb bll blo blp blt blu bob bol boo bop bot bou bpb bpl bpo bpp bpt bpu btb btl bto btp btt btu bub bul buo bup but buu l-p lbb lbl lbo lbp lbt lbu llb lll llo llp llt llu lob lol loo lop lot lou lpb lpl lpo lpp lpt lpu ltb ltl lto ltp ltt ltu lub lul luo lup lut luu ob- obb obl obo obp obt obu olb oll olo olp olt olu oo- oob ool ooo oop oot op- opb opl opo opp opt ot- otb otl oto otp ott otu ou- oul ouo oup out p-p pbb pbl pbo pbp pbt pbu plb pll plo plp plt plu pob pol poo pop pot pou ppb ppl ppo ppp ppt ppu pt- ptb ptl pto ptp ptt ptu pub pul pup put puu tbb tbl tbo tbp tbt tbu tll tlo tlp tlt tlu to- tob tol too top tot tou tpb tpl tpo tpp tpt tpu ttb ttl tto ttp ttt ttu tub tul tuo tup tut tuu ubb ubl ubo ubp ubt ubu ulb ull ulo ulp ult ulu uob uol uoo uop uot up- upb upo upp upt upu utb utl uto utp utt utu uut uuu