fff ffi ffm ffn ffr fif fii fim fin fir fmf fmi fmm fmn fmr fnf fni fnm fnn fnr frf fri frm frn frr i-f iff ifi ifm ifn ifr iif iii iim iin iir im- imf imi imm imn in- inf ini inm inn inr ir- irf iri irm irn irr m-f m-r mff mfi mfm mfn mfr mi- mif mii mim min mir mmf mmi mmm mmn mmr mnf mni mnm mnn mnr mrf mri mrm mrn mrr n-i nff nfi nfn nfr nif nii nim nin nir nmi nmm nmn nmr nnf nni nnm nnn nrf nri nrm nrn nrr rff rfi rfm rfn rfr rif rii rim rin rir rmf rmi rmm rmn rmr rni rnm rnn rnr rrf rri rrm rrn rrr