fff ffh ffn ffo ffr fhf fhh fhn fho fhr fnf fnh fnn fnr fof foh fon foo for frf frh frn fro frr hff hfh hfn hfo hfr hhf hhh hhn hho hhr hnf hnh hnn hno hof hoh hon hoo hor hr- hrf hrh hrn hro hrr nff nfn nfo nfr nhf nhh nhn nhr nnf nnh nnn nno no- nof noh non noo nor nrf nrn nro nrr of- off ofn ofo ofr ohf ohh ohn oho ohr on- onf onh onn ono onr oo- oof ooh oon ooo oor or- orf orh orn oro orr rff rfh rfn rfo rfr rh- rhf rhh rhn rho rhr rnh rnn rno rnr rof roh ron roo ror rrf rrh rrn rrr