fff ffn ffo ffr ffv fnf fnn fnr fnv fof fon foo for frf frn fro frr nff nfn nfo nfr nfv nnf nnn nno nnv no- nof non noo nor nov nrf nrn nro nrr nrv nvn nvv of- off ofn ofo ofr ofv on- onf onn ono onr oo- oof oon ooo oor oov or- orf orn oro orr orv ov- ovf ovo ovv rff rfn rfo rfr rfv rnn rno rnr rnv rof ron roo ror rov rrf rrn rrr rvf rvn rvo rvr rvv vff vfn vfr vfv vn- vnf vno vnr vnv vof von voo vor vov vrf vrn vrr vvo vvr vvv

ffff ffrr fofo fono foof foon for- forn foro forr fr-v fron nfff nfon nnnn non- nonn nono noo- noon nooo noor noov nor- norf norn noro norr norv nov- novo nron nvfr off- offo offr ofno ofor onno onon onor ooff oooo orff orno oro- orof oron oror orro orvr ovo- ovon ovoo roff rofo rono roof roon roor roro rovo rrrr vfor voff vofr vonn voor vor- voro vrnn vron vvvv

forno forro forvo frorn nnooo no-no nofor nonno noron norro norvo novo- nroff offof offon ofono oforn onoff onoon onorn ooooo oovoo orfor ornon orono ro-ro rofor ronno rovon voorn voron vroon

foofoo noforn non-no nonono nonoon noonoo noonor noroff noroof on-off oooooo ronnon ronron vvvvvv

foo-foo nonroof off-off onoffon voronov

forfrorn nononono vorovoro