-ol b-p bbb bbl bbo bbp bbt bbx blb bll blo blp blt blx bob bol boo bop bot box bpb bpl bpo bpp bpt bpx btb btl bto btp btt btx bxb bxl bxo bxx l-p lbb lbl lbo lbp lbt lbx llb lll llo llp llt lob lol loo lop lot lox lpb lpl lpo lpp lpt lpx ltb ltl lto ltp ltt ltx lxo lxx ob- obb obl obo obp obt obx olb oll olo olp olt oo- oob ool ooo oop oot oox op- opb opl opo opp opt opx ot- otb otl oto otp ott ox- oxb oxo oxt oxx p-p pbb pbl pbo pbp pbt pbx plb pll plo plp plt plx pob pol poo pop pot pox ppb ppl ppo ppp ppt ppx pt- ptb ptl pto ptp ptt ptx pxl pxt t-x tbb tbl tbo tbp tbt tll tlo tlp tlt tlx to- tob tol too top tot tox tpb tpl tpo tpp tpt tpx ttb ttl tto ttp ttt ttx txl txt xbl xbx xlb xlt xoo xop xot xox xpb xpl xpo xpp xpt xtp xtx xxl xxo xxp xxx