SUPERINSISTENT

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ens ere ern ers ess inn ins ire its nee net nip nit nun nus nut pee pen per pes pet pie pin pis pit piu psi pst pun pur pus put ree rei rep res ret rin rip rue run rut see sei sen ser set sin sip sir sis sit sri sue sun sup tee ten tet tie tin tip tis tit tui tun tup tut uns ups urn urp use ute uts

erne erns erst eses esne etui inns inti ires iris neep nene ness nest nets nett nine nips nisi nite nits nuns nuts peen peer pees pein pens pent pere peri pert pest pets pier pies pine pins pint pirn piss pits pree psis psst ptui puns punt pure puri purs puss puts putt rees rein reis rent reps rest rete rets rins ripe rips rise rite rues ruin rune runs runt ruse rust ruts seen seep seer sees seis sene sent sept sere sers sets sett sine sins sipe sips sire sirs site sits snip snit spin spit spue spun spur sris step stet stir stun suer sues suet suit sunn suns supe sups sure suss teen tees tens tent tern test tets tier ties tine tins tint tipi tips tire titi tits tree tres tret trip true tuis tune tuns tups turn tuts unit urns urps user uses utes