-er eee eef een eeo eep eer ef- efe eff efi efo efp efr eie eif eii ein eio eip eir en- ene enf eni enn eno enp enr eo- eoe eof eoi eon eoo eop eor ep- epe epf epi epn epo epp epr ere erf eri ern ero erp err fee fef fei fen feo fep fer ffe fff ffi ffn ffo ffp ffr fie fif fii fin fip fir fne fnf fni fnn fnp fnr foe fof foi fon foo fop for fpe fpi fpn fpo fpp fpr fre frf fri frn fro frp frr i-f ie- iee ief iei ien iep ier ife iff ifi ifn ifo ifp ifr iie iif iii iin iio iip iir in- ine inf ini inn ino inp inr io- ioe iof ioi ion ioo iop ior ipe ipf ipi ipn ipo ipp ipr ir- ire irf iri irn iro irp irr n-i ne- nee nef nei nen neo nep ner nfe nff nfi nfn nfo nfp nfr nie nif nii nin nio nip nir nne nnf nni nnn nno nnp no- noe nof noi non noo nop nor npe npf npi npn npo npp npr nre nrf nri nrn nro nrp nrr o-i oee oef oei oen oeo oep oer of- ofe off ofi ofn ofo ofp ofr oie oif oii oin oio oip oir on- one onf oni onn ono onp onr oo- oof ooi oon ooo oop oor op- ope opf opi opn opo opp opr or- ore orf ori orn oro orp orr p-p pee pef pei pen peo pep per pfe pff pfi pfn pfo pfp pfr pie pif pii pin pio pip pir pn- pne pnf pni pnn pno pnp pnr poe pof poi pon poo pop por ppe ppf ppi ppn ppo ppp ppr pre prf pri prn pro prp prr re- ree ref rei ren reo rep rer rfe rff rfi rfn rfo rfp rfr rie rif rii rin rio rip rir rni rnn rno rnp rnr roe rof roi ron roo rop ror rpe rpf rpi rpn rpo rpp rpr rrf rri rrn rrp rrr