-ol fff ffg ffi ffl ffo ffs fft fgf fgg fgi fgl fgs fgt fif fig fii fil fis fit flf flg fli fll flo fls flt fof fog foi fol foo fos fot fsf fsg fsi fsl fso fss fst ftf ftg fti ftl fto fts ftt gff gfi gfl gfo gfs gft ggg ggi ggo ggs ggt gif gig gii gil gio gis git glf glg gli gll glo gls glt gof gog goi gol goo gos got gsf gsg gsi gsl gso gss gst gtf gtg gti gtl gto gts gtt i-f iff ifg ifi ifl ifo ifs ift igf igg igi igl igo igs igt iif iii iil iio iis iit il- ilf ilg ili ill ilo ils ilt io- iof iog ioi iol ioo ios iot is- isf isg isi isl iso iss ist itf itg iti itl ito its itt lff lfg lfi lfl lfo lfs lft lgf lgg lgi lgl lgo lgs lgt lif lig lii lil lio lis lit llf llg lli lll llo lls llt lof log loi lol loo los lot lsf lsg lsi lsl lso lss lst ltf ltg lti ltl lto lts ltt o-i of- off ofg ofi ofl ofo ofs oft ogf ogg ogi ogl ogo ogs ogt oif oii oil oio ois oit olf olg oli oll olo ols olt oo- oof oog ooi ool ooo oos oot os- osf osg osi osl oso oss ost ot- otf otg oti otl oto ots ott sff sfg sfi sfl sfo sfs sft sgf sgg sgi sgl sgo sgs sgt sif sig sii sil sio sis sit slf slg sli sll slo sls slt sof sog soi sol soo sos sot ss- ssf ssg ssi ssl sso sss sst stf stg sti stl sto sts stt tff tfg tfi tfl tfo tfs tft tgf tgg tgi tgl tgo tgs tgt tif tig tii til tio tis tit tlf tlg tli tll tlo tls tlt to- tof tog toi tol too tos tot tsf tsg tsi tsl tso tss tst ttf ttg tti ttl tto tts ttt