PERISPERMS

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emes emir errs eses imps ires isms mere mess mips mire mirs mise miss peep peer pees peps pere peri perm perp pier pies pimp pipe pips piss pree prep prim psis rees reis rems repp reps rime rims ripe rips rise seem seep seer sees seis seme semi sere sers simp sims sipe sips sire sirs sris