SECURIFERA

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aces acre airs arcs ares arfs arse asci cafe care carr cars case cees cere cire cris crus cues cuif cure curf curr curs ears ease ecru ecus eras errs face fair fare fear fees fere feus fiar fice fire firs fisc frae free fuci furs fuse ices ires race rais rare rase rear recs reef rees refs reif reis rias rice rife rifs rise ruer rues ruse safe sari scar sear seer seif sera sere serf sice sire suer sura sure surf urea uric ursa user