fff ffo ffr ffs ffu ffv fof foo for fos fou frf fro frr frs fru fsf fso fsr fss fsu fsv fuf fuo fur fus fuu fuv of- off ofo ofr ofs ofu ofv oo- oof ooo oor oos oov or- orf oro orr ors oru orv os- osf oso osr oss osu osv ou- ouf ouo our ous ov- ovf ovo ovs ovv rff rfo rfr rfs rfu rfv rof roo ror ros rou rov rrf rrr rrs rru rsf rso rsr rss rsu rsv ruf ruo rur rus ruu ruv rvf rvo rvr rvs rvu rvv sff sfo sfr sfs sfu sfv sof soo sor sos sou sov sr- srf sro srr srs srv ss- ssf sso ssr sss ssu ssv suf suo sur sus suu suv svf svo svr svs svu svv uff ufo ufr ufs ufu ufv uoo uor uos ur- urf uro urr urs uru usf uso usr uss usu usv uur uus uuu uvf uvo uvs uvu uvv vff vfr vfs vfu vfv vof voo vor vos vou vov vrf vrr vrs vru vsf vso vsr vss vsu vsv vur vus vuv vvo vvr vvs vvv

-ous ffff ffrr ffss ffvs fofo foof foos for- foro forr fors foso foss four fous fr-v fros frou frso fsfo fssf fuff fufu fuor fur- furo furr furs fuso fuss fusu fvsu off- offo offr offs offu ofor ofus ooff oofs oooo ooos oous orff orfs orfu oro- orof oror oros orro orrs orso orsu orus orvr orvs osoo osor osos osov osro osso ossu ouff our- ouro ours ouu- ovo- ovoo roff rofo roof roor roos roro roru roso ross rouf rous rovo rovs rrrr rsos ruff rufo ruro rurs ruru ruso russ rusu ruvu s-os sfor sfos sfro sfss sfsu sofo soof soor soos soro sorr sors soru soso soss sosv souf sour sous sovo sovs sovu sros ssrs sssf ssss suf- suff sufr sufs sufu suor suos sur- surf suro surr surs suru surv sus- suso suss susu suus suvs svor ufos uofo uor- uovo urff uro- uroo urso urss ursu urur urus usfs usos usov ussf ussr usss ussu usus uuuu uvvu vfor voff vofr voor vor- voro vors voru voso voss vosu vour vous vsfs vvvv

fofos foros forro forso forss forur forus forvo fouro fours fu-fu fuffs furo- furor furrs furus fuso- fusor fusus offof ofosu ofour ooooo oovoo orfor oroso orosu oruro ososo ossos ossur osusu ouoro ovoos ro-ro rofor roofs rosso rosss rosu rsssf ruffo ruffs rufo- rufus rusor rusov russo s-o-r sfouf so-so sooru soror soros sorso sorsu sorus soss- sosus souff sours sous- sroof sssss suffr suffs surfs surov surur surus susso susus ufofu uros urour urous ursus usfor usour usovo uuuuu uvrou vooru voous vovos

foofoo foofur forros fosso fossor foufou fourof fourou furfur furors furour furrfu fusors oooooo orrour ossous ououso ousrou rofors ruffus rufous rusovo russo- russus soosoo sorors sorous sorrus sorsor sourou sousou sssfrs suroso susurr urusov voros vvvvvv

foo-foo fossors fou-fou furrour off-off sorfors sou-sou sssssss suursoo suvorov usurous

fosforus froufrou sussurus susurrus suvorovo svosov vorovoro

four-four frou-frou froufrous furfurous sous-sous susurrous

frou-frous vourvourou