-ol b-p bbb bbf bbi bbl bbo bbp bbt bfb bff bfi bfl bfo bfp bft bi- bib bif bii bil bio bip bit blb blf bli bll blo blp blt bob bof boi bol boo bop bot bpb bpf bpi bpl bpo bpp bpt btb btf bti btl bto btp btt fbb fbf fbi fbl fbo fbp fbt fff ffi ffl ffo ffp fft fib fif fii fil fip fit flb flf fli fll flo flp flt fob fof foi fol foo fop fot fpb fpi fpl fpo fpp fpt ftb ftf fti ftl fto ftp ftt i-f ibb ibf ibi ibl ibo ibp ibt ifb iff ifi ifl ifo ifp ift iib iif iii iil iio iip iit il- ilb ilf ili ill ilo ilp ilt io- iob iof ioi iol ioo iop iot ipb ipf ipi ipl ipo ipp ipt itb itf iti itl ito itp itt l-p lbb lbf lbi lbl lbo lbp lbt lfb lff lfi lfl lfo lfp lft lib lif lii lil lio lip lit llb llf lli lll llo llp llt lob lof loi lol loo lop lot lpb lpf lpi lpl lpo lpp lpt ltb ltf lti ltl lto ltp ltt o-i ob- obb obf obi obl obo obp obt of- ofb off ofi ofl ofo ofp oft oib oif oii oil oio oip oit olb olf oli oll olo olp olt oo- oob oof ooi ool ooo oop oot op- opb opf opi opl opo opp opt ot- otb otf oti otl oto otp ott p-p pbb pbf pbi pbl pbo pbp pbt pfb pff pfi pfl pfo pfp pft pib pif pii pil pio pip pit plb plf pli pll plo plp plt pob pof poi pol poo pop pot ppb ppf ppi ppl ppo ppp ppt pt- ptb ptf pti ptl pto ptp ptt tbb tbf tbi tbl tbo tbp tbt tfb tff tfi tfl tfo tfp tft tib tif tii til tio tip tit tlf tli tll tlo tlp tlt to- tob tof toi tol too top tot tpb tpf tpi tpl tpo tpp tpt ttb ttf tti ttl tto ttp ttt