fff ffn ffo ffr fnf fnn fnr fof fon foo for frf frn fro frr nff nfn nfo nfr nnf nnn nno no- nof non noo nor nrf nrn nro nrr of- off ofn ofo ofr on- onf onn ono onr oo- oof oon ooo oor or- orf orn oro orr rff rfn rfo rfr rnn rno rnr rof ron roo ror rrf rrn rrr

ffff ffrr fofo fono foof foon for- forn foro forr fron nfff nfon nnnn non- nonn nono noo- noon nooo noor nor- norf norn noro norr nron off- offo offr ofno ofor onno onon onor ooff oooo orff orno oro- orof oron oror orro roff rofo rono roof roon roor roro rrrr

forno forro frorn nnooo no-no nofor nonno noron norro nroff offof offon ofono oforn onoff onoon onorn ooooo orfor ornon orono ro-ro rofor ronno

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

foo-foo off-off onoffon

forfrorn nononono