fff ffi ffl ffm ffp ffs fif fii fil fim fip fis flf fli fll flm flp fls fmf fmi fml fmm fmp fms fpi fpl fpm fpp fps fsf fsi fsl fsm fsp fss i-f iff ifi ifl ifm ifp ifs iif iii iil iim iip iis il- ilf ili ill ilm ilp ils im- imf imi iml imm imp ims ipf ipi ipl ipm ipp ips is- isf isi isl ism isp iss l-p lff lfi lfl lfm lfp lfs lif lii lil lim lip lis llf lli lll llm llp lls lmf lmi lml lmm lmp lms lpf lpi lpl lpm lpp lps lsf lsi lsl lsm lsp lss m-f mff mfi mfl mfm mfp mfs mi- mif mii mil mim mip mis mlf mli mll mlm mlp mls mmf mmi mml mmm mmp mms mpf mpi mpl mpm mpp mps msf msi msl msm msp mss p-p pff pfi pfl pfm pfp pfs pif pii pil pim pip pis plf pli pll plm plp pls pmf pmi pml pmm pmp pms ppf ppi ppl ppm ppp pps ps- psf psi psl psm psp pss sff sfi sfl sfm sfp sfs sif sii sil sim sip sis slf sli sll slm slp sls smf smi sml smm smp sms spf spi spl spm spp sps ss- ssf ssi ssl ssm ssp sss