fff ffi ffm ffn ffo ffp ffr fif fii fim fin fip fir fmf fmi fmm fmn fmo fmp fmr fnf fni fnm fnn fnp fnr fof foi fom fon foo fop for fpi fpm fpn fpo fpp fpr frf fri frm frn fro frp frr i-f iff ifi ifm ifn ifo ifp ifr iif iii iim iin iio iip iir im- imf imi imm imn imo imp in- inf ini inm inn ino inp inr io- iof ioi iom ion ioo iop ior ipf ipi ipm ipn ipo ipp ipr ir- irf iri irm irn iro irp irr m-f m-o m-r mff mfi mfm mfn mfo mfp mfr mi- mif mii mim min mio mip mir mmf mmi mmm mmn mmo mmp mmr mnf mni mnm mnn mno mnp mnr mof moi mom mon moo mop mor mpf mpi mpm mpn mpo mpp mpr mrf mri mrm mrn mro mrp mrr n-i nff nfi nfn nfo nfp nfr nif nii nim nin nio nip nir nmi nmm nmn nmo nmp nmr nnf nni nnm nnn nno nnp no- nof noi nom non noo nop nor npf npi npm npn npo npp npr nrf nri nrm nrn nro nrp nrr o-i of- off ofi ofm ofn ofo ofp ofr oif oii oim oin oio oip oir om- omf omi omm omn omo omp omr on- onf oni onn ono onp onr oo- oof ooi oom oon ooo oop oor op- opf opi opm opn opo opp opr or- orf ori orm orn oro orp orr p-p pff pfi pfm pfn pfo pfp pfr pif pii pim pin pio pip pir pmf pmi pmm pmn pmo pmp pmr pn- pnf pni pnm pnn pno pnp pnr pof poi pom pon poo pop por ppf ppi ppm ppn ppo ppp ppr prf pri prm prn pro prp prr rff rfi rfm rfn rfo rfp rfr rif rii rim rin rio rip rir rmf rmi rmm rmn rmo rmp rmr rni rnm rnn rno rnp rnr rof roi rom ron roo rop ror rpf rpi rpm rpn rpo rpp rpr rrf rri rrm rrn rrp rrr