-up p-p ppp ppr pps ppu prp prr prs pru ps- psp psr pss psu pup pur pus puu rpp rpr rps rpu rrp rrr rrs rru rsp rsr rss rsu rup rur rus ruu spp spr sps spu sr- srp srr srs ss- ssp ssr sss ssu sup sur sus suu up- upp upr ups upu ur- urp urr urs uru usp usr uss usu uur uus uuu

pppp ppps ppru ppss ppur prps prrs prss prus pruu pspp pspr psps psrp pups pupu pur- purp purr purs puru puss rpps rrrr rrsp rsps rupp rurp rurs ruru russ rusu spps sprs spsp spss spur spus srps srsp ssps ssrs ssss sup- supp supr sups sur- surp surr surs suru sus- susp suss susu suus u-rp uppp uppu upup urss ursu urup urur urus uspp usps ussr usss ussu usus uuuu

pruss purrs purus puurs rrsps spurr sssss supps supur surpu surur surus susus ursus usurp uuuuu

pppppp ppsspp purpur russus srprss susurr uruppu usurps

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sussurus susurrus