-ol fff ffg ffl ffn ffo ffs fft fgf fgg fgl fgn fgs fgt flf flg fll fln flo fls flt fnf fng fnl fnn fns fnt fof fog fol fon foo fos fot fsf fsg fsl fsn fso fss fst ftf ftg ftl ftn fto fts ftt gff gfl gfo gfs gft ggg ggn ggo ggs ggt glf glg gll gln glo gls glt gnf gnl gnn gno gns gnt gof gog gol gon goo gos got gsf gsg gsl gsn gso gss gst gtf gtg gtl gtn gto gts gtt lff lfg lfl lfn lfo lfs lft lgf lgg lgl lgn lgo lgs lgt llf llg lll lln llo lls llt lng lnl lnn lno lns lnt lof log lol lon loo los lot lsf lsg lsl lsn lso lss lst ltf ltg ltl lto lts ltt nff nfl nfn nfo nfs nft ngf ngg ngl ngn ngo ngs ngt nlf nlg nll nln nlo nls nlt nnf nng nnl nnn nno nns nnt no- nof nog nol non noo nos not nsf nsg nsl nsn nso nss nst ntf ntg ntn nto nts ntt of- off ofg ofl ofn ofo ofs oft ogf ogg ogl ogn ogo ogs ogt olf olg oll oln olo ols olt on- onf ong onl onn ono ons ont oo- oof oog ool oon ooo oos oot os- osf osg osl osn oso oss ost ot- otf otg otl otn oto ots ott sff sfg sfl sfn sfo sfs sft sgf sgg sgl sgn sgo sgs sgt slf slg sll sln slo sls slt snf sng snl snn sno sns snt sof sog sol son soo sos sot ss- ssf ssg ssl ssn sso sss sst stf stg stl stn sto sts stt tff tfg tfl tfn tfo tfs tft tgf tgg tgl tgn tgo tgs tgt tlf tlg tll tln tlo tls tlt tnf tng tnl tnn tno tns tnt to- tof tog tol ton too tos tot tsf tsg tsl tsn tso tss tst ttf ttg ttl ttn tto tts ttt