-up fff ffo ffp ffr ffs ffu fof foo fop for fos fou fpo fpp fpr fps fpu frf fro frp frr frs fru fsf fso fsp fsr fss fsu fuf fuo fup fur fus fuu of- off ofo ofp ofr ofs ofu oo- oof ooo oop oor oos op- opf opo opp opr ops or- orf oro orp orr ors oru os- osf oso osp osr oss osu ou- ouf ouo oup our ous p-p pff pfo pfp pfr pfs pfu pof poo pop por pos pou ppf ppo ppp ppr pps ppu prf pro prp prr prs pru ps- psf pso psp psr pss psu puf pup pur pus puu rff rfo rfp rfr rfs rfu rof roo rop ror ros rou rpf rpo rpp rpr rps rpu rrf rrp rrr rrs rru rsf rso rsp rsr rss rsu ruf ruo rup rur rus ruu sff sfo sfp sfr sfs sfu sof soo sop sor sos sou spf spo spp spr sps spu sr- srf sro srp srr srs ss- ssf sso ssp ssr sss ssu suf suo sup sur sus suu uff ufo ufp ufr ufs ufu uoo uop uor uos up- upf upo upp upr ups upu ur- urf uro urp urr urs uru usf uso usp usr uss usu uur uus uuu

-ous ffff ffps ffrr ffss fofo foof foos fopp fops for- foro forr fors foso foss foup four fous fprf frop fros frou frps frso fsfo fspf fssf fssp fuff fufu fuor fur- furo furr furs fuso fuss fusu off- offo offr offs offu ofor ofus ooff oofs oooo ooos oops oous opo- opor opos oppo opps opsu opus orff orfs orfu oro- orof oror oros orps orro orrs orso orsu orup orus osoo osor osos osro osso ossu ouff our- ouro ours ouu- pfff pffr pfps poff poof poop poor poos pop- popo popp pops poro porr pors poso poss pouf poup pour pous ppos pppo pppp ppps pprf ppru ppsf ppss ppur prfs pro- prof proo prop pros prou prps prrs prso prss pruf prus pruu psfs psos psou pspp pspr psps psrp psso puff pups pupu pur- puro purp purr purs puru puss roff rofo roof roop roor roos ropo rops roro roru roso rosp ross rouf roup rous rpof rpos rpps rrrr rrsp rsos rspo rsps ruff rufo rupp ruro rurp rurs ruru ruso russ rusu s-os sfor sfos sfro sfss sfsu sofo soof soop soor soos sopo sopp sops sopu soro sorr sors soru soso soss souf soup sour sous spfs spoo spop spor spos sppf spps spro sprs spso spsp spss spur spus sros srps srsp ssfp ssop sspf sspo ssps ssrs sssf ssss suf- suff sufr sufs sufu suor suos sup- supo supp supr sups sur- surf suro surp surr surs suru sus- suso susp suss susu suus u-rp ufos uofo uor- upor upos uppp uppu upup urff uro- uroo urpo urso urss ursu urup urur urus usfs usos uspo uspp usps ussf ussr usss ussu usus uuuu

fofos fopos foros forro forso forss forur forus fouro fours froop froup fu-fu fuffs furo- furor furps furrs furus fuso- fusor fusus offof ofosu ofour ofpop ooooo oppos orfor oroso orosu oruro ososo ossos ossur osusu ouoro pforp po-po poofs poopo poops poors popop popos poppo popup poro- poros porro porur porus posof pouff poufs pours pouss proff profs proof proor prop- propp propr props pros- proso pross pruss psor- psoup puffs puppo puro- puros purrs purus puurs ro-ro rofor roofs roops ropos rosso rosss rosu roups rprop rrsps rsssf ruffo ruffs rufo- rufus rusor russo s-o-r sfouf so-so sooru sopor soppo sopup soror soros sorso sorsu sorus soss- sosus souff soups sours sous- spoof spoor spor- sporo spors sposo spurr spurs sroof sssss suffr suffs supor supps supur surfs surpu surur surus susso susus u-pop ufofu uorps upfor upoff uros urour urous ursus usfor usour usurp uuuuu

foofoo foofur forros fosso fossor foufou fourof fourou froups fruupp furfur furors furour furrfu fusors ofpoor ofspor oooooo oropos orrour osoppo ossous ououso ousrou poofup poopoo pop-up popfor popoff popopo poporo poppop popsup popups porous porpos porpus poupou pppppp ppsspp profor profos profur proofs proors propos propup propur propus proso- prosso prusso psoro- puffup purpur pusfor pusso- rofors ruffus rufous russo- russus soosoo sopors sopsup sorors sorous sorrus sorsor sorup soupup sourou sousou spoofs spoors sporo- sporus srprss sssfrs suppos suroso susurr uppoor upprop uruppu usurps

foo-foo fossors fou-fou furrour off-off ofproof oppuurs poo-poo poopoos pop-off pop-ups popoffs popsoff poroso- poupous propsup prosop- prousos purpour sorfors sorporr sou-sou soupsup soursop sporous sssssss suursoo usurous usurpor

fosforus froufrou poorpoor poroporo pourpour proprofs prosopo- prosorus prosupps soporous sour-sop sourpuss soursops sussurus susurrus

four-four frou-frou froufrous furfurous oosporous puff-puff purpurous sous-sous susurrous

frou-frous

proof-proof

propuppropup