fff ffi ffk ffl ffs fft fif fii fik fil fis fit fkf fki fkk fkl fkt flf fli fll fls flt fsf fsi fsk fsl fss fst ftf fti ftk ftl fts ftt i-f iff ifi ifl ifs ift iif iii iil iis iit ikf iki ikk ikl iks ikt il- ilf ili ilk ill ils ilt is- isf isi isk isl iss ist itf iti itk itl its itt k-t kff kfi kfs kif kii kik kil kis kit kki kkk kkl kks kkt kl- klf kli kls klt ksf ksi ksk ksl kss kst ktf ktk ktl kts ktt lff lfi lfk lfl lfs lft lif lii lik lil lis lit lkl lks lkt llf lli llk lll lls llt lsf lsi lsk lsl lss lst ltf lti ltk ltl lts ltt sff sfi sfk sfl sfs sft sif sii sik sil sis sit sk- skf ski skk skl sks skt slf sli slk sll sls slt ss- ssf ssi ssk ssl sss sst stf sti stk stl sts stt tff tfi tfk tfl tfs tft tif tii tik til tis tit tkk tkl tks tkt tlf tli tlk tll tls tlt tsf tsi tsk tsl tss tst ttf tti ttk ttl tts ttt