fff ffo ffr ffu ffz fof foo for fou foz frf fro frr fru fuf fuo fur fuu of- off ofo ofr ofu ofz oo- oof ooo oor or- orf oro orr oru orz ou- ouf ouo our ozo ozu ozz rff rfo rfr rfu rfz rof roo ror rou roz rrf rrr rru ruf ruo rur ruu ruz rzo uff ufo ufr ufu uoo uor ur- urf uro urr uru urz uur uuu uzo uzu zfr zo- zof zoo zor zou zro zur zuz zzr zzz

ffff ffrr fofo foof for- foro forr four frou fruz fuff fufu fuor fur- furo furr fuzz off- offo offr offu ofor ofoz ofuz ooff oooo orff orfu oro- orof oror oroz orro orzo orzu ouff our- ouro ouu- ouzo roff rofo roof roor rooz roro roru rouf rouz rozz rrrr ruff rufo ruro ruru uofo uor- urff uro- uroo urur uruz uuuu z-ro zoff zoo- zoro zozo zozu zuoz zurf zurr zuru zuzu zzzz

forro forur fouro fu-fu furo- furor offof ofour ooooo orfor oruro ouoro ozoro ro-ro rofor ruffo rufo- ufofu urour urroz uuuuu zorro zu-zu zzzzz

foofoo foofur foufou fourof fourou furfur furour furrfu oooooo orrour zoozoo zorzor zouzou

foo-foo fou-fou furrour off-off ofzorro zou-zou

froufrou zuzzurro

four-four frou-frou