-ol b-p bbb bbf bbi bbl bbo bbp bbt bbx bfb bff bfi bfl bfo bfp bft bfx bi- bib bif bii bil bio bip bit bix blb blf bli bll blo blp blt blx bob bof boi bol boo bop bot box bpb bpf bpi bpl bpo bpp bpt bpx btb btf bti btl bto btp btt btx bxb bxi bxl bxo bxx fbb fbf fbi fbl fbo fbp fbt fbx fff ffi ffl ffo ffp fft ffx fib fif fii fil fip fit fix flb flf fli fll flo flp flt flx fob fof foi fol foo fop fot fox fpb fpi fpl fpo fpp fpt fpx ftb ftf fti ftl fto ftp ftt ftx fxi fxp fxt fxx i-f ibb ibf ibi ibl ibo ibp ibt ibx ifb iff ifi ifl ifo ifp ift ifx iib iif iii iil iio iip iit iix il- ilb ilf ili ill ilo ilp ilt ilx io- iob iof ioi iol ioo iop iot ipb ipf ipi ipl ipo ipp ipt ipx itb itf iti itl ito itp itt itx ixi ixl l-p lbb lbf lbi lbl lbo lbp lbt lbx lfb lff lfi lfl lfo lfp lft lfx lib lif lii lil lio lip lit lix llb llf lli lll llo llp llt lob lof loi lol loo lop lot lox lpb lpf lpi lpl lpo lpp lpt lpx ltb ltf lti ltl lto ltp ltt ltx lxi lxo lxx o-i ob- obb obf obi obl obo obp obt obx of- ofb off ofi ofl ofo ofp oft ofx oib oif oii oil oio oip oit olb olf oli oll olo olp olt oo- oob oof ooi ool ooo oop oot oox op- opb opf opi opl opo opp opt opx ot- otb otf oti otl oto otp ott ox- oxb oxf oxi oxo oxt oxx p-p pbb pbf pbi pbl pbo pbp pbt pbx pfb pff pfi pfl pfo pfp pft pfx pib pif pii pil pio pip pit pix plb plf pli pll plo plp plt plx pob pof poi pol poo pop pot pox ppb ppf ppi ppl ppo ppp ppt ppx pt- ptb ptf pti ptl pto ptp ptt ptx pxl pxt t-x tbb tbf tbi tbl tbo tbp tbt tfb tff tfi tfl tfo tfp tft tfx tib tif tii til tio tip tit tix tlf tli tll tlo tlp tlt tlx to- tob tof toi tol too top tot tox tpb tpf tpi tpl tpo tpp tpt tpx ttb ttf tti ttl tto ttp ttt ttx txf txi txl txt xbl xbx xfl xft xfx xii xio xit xix xlb xlf xli xlt xof xoi xoo xop xot xox xpb xpf xpl xpo xpp xpt xtf xti xtp xtx xxi xxl xxo xxp xxx