fff ffi ffn ffp ffr fft fif fii fin fip fir fit fnf fni fnn fnp fnr fnt fpi fpn fpp fpr fpt frf fri frn frp frr frt ftf fti ftn ftp ftr ftt i-f iff ifi ifn ifp ifr ift iif iii iin iip iir iit in- inf ini inn inp inr int ipf ipi ipn ipp ipr ipt ir- irf iri irn irp irr irt itf iti itn itp itt n-i nff nfi nfn nfp nfr nft nif nii nin nip nir nit nnf nni nnn nnp nnt npf npi npn npp npr npt nrf nri nrn nrp nrr nrt ntf nti ntn ntp ntr ntt p-p pff pfi pfn pfp pfr pft pif pii pin pip pir pit pn- pnf pni pnn pnp pnr pnt ppf ppi ppn ppp ppr ppt prf pri prn prp prr prt pt- ptf pti ptn ptp ptr ptt rff rfi rfn rfp rfr rft rif rii rin rip rir rit rni rnn rnp rnr rnt rpf rpi rpn rpp rpr rpt rrf rri rrn rrp rrr rrt rtf rti rtn rtp rtr rtt tff tfi tfn tfp tfr tft tif tii tin tip tir tit tnf tni tnn tnp tnr tnt tpf tpi tpn tpp tpr tpt trf tri trn trp trr trt ttf tti ttn ttp ttr ttt