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pppp ppps ppru ppss ppur prps prrs prss prus pruu prys pspp pspr psps psrp psy- psys pups pupu pupy pur- purp purr purs puru pury puss puy- puys pypy pyr- pyry pyss rpps rrrr rrsp rsps rupp rupy rurp rurs ruru russ rusu rusy ruys rysy spps sprs spry spsp spss spur spus spy- spyr spys srps srsp ssps ssrs ssss sup- supp supr sups supy sur- surp surr surs suru sury sus- susp suss susu susy suus suyr suyu syrs syry syss u-rp uppp uppu uppy upsy upup urry urss ursu ursy urup urur urus uspp usps ussr usss ussu ussy usus uuuu yssu yups yury yuyu yyyy

pruss prusy pruys pryss pryup pryys psy-s puppy pupsy purrs purry pursy purus pussy puurs pyrus rrsps ruppy russy spurr spurs spyrr sssss supps supur surpu surry sursy surur surus sussy susus syrus ursus uryu uryuu usspy usurp usury uuuuu yuppy

pppppp ppsspp purpur purpyr russus spurry srprss susurr syrups syrupy uruppu usurps yru-up

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sussurus susurrus