-ol fff ffi ffl ffn ffo ffs fft fif fii fil fin fis fit flf fli fll fln flo fls flt fnf fni fnl fnn fns fnt fof foi fol fon foo fos fot fsf fsi fsl fsn fso fss fst ftf fti ftl ftn fto fts ftt i-f iff ifi ifl ifn ifo ifs ift iif iii iil iin iio iis iit il- ilf ili ill iln ilo ils ilt in- inf ini inl inn ino ins int io- iof ioi iol ion ioo ios iot is- isf isi isl isn iso iss ist itf iti itl itn ito its itt lff lfi lfl lfn lfo lfs lft lif lii lil lin lio lis lit llf lli lll lln llo lls llt lni lnl lnn lno lns lnt lof loi lol lon loo los lot lsf lsi lsl lsn lso lss lst ltf lti ltl lto lts ltt n-i nff nfi nfl nfn nfo nfs nft nif nii nil nin nio nis nit nlf nli nll nln nlo nls nlt nnf nni nnl nnn nno nns nnt no- nof noi nol non noo nos not nsf nsi nsl nsn nso nss nst ntf nti ntn nto nts ntt o-i of- off ofi ofl ofn ofo ofs oft oif oii oil oin oio ois oit olf oli oll oln olo ols olt on- onf oni onl onn ono ons ont oo- oof ooi ool oon ooo oos oot os- osf osi osl osn oso oss ost ot- otf oti otl otn oto ots ott sff sfi sfl sfn sfo sfs sft sif sii sil sin sio sis sit slf sli sll sln slo sls slt snf sni snl snn sno sns snt sof soi sol son soo sos sot ss- ssf ssi ssl ssn sso sss sst stf sti stl stn sto sts stt tff tfi tfl tfn tfo tfs tft tif tii til tin tio tis tit tlf tli tll tln tlo tls tlt tnf tni tnl tnn tno tns tnt to- tof toi tol ton too tos tot tsf tsi tsl tsn tso tss tst ttf tti ttl ttn tto tts ttt