SUBCARRIER

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abri aces acre airs arbs arcs ares arse asci bare bars base bear beau bias bice bier birr bise brae bras brie bris brrr bura burr burs cabs carb care carr cars case cire crab crib cris crus cube cubs cues curb cure curr curs ears ecru ecus eras errs ices ires isba race rais rare rase rear rebs recs reis rias ribs rice rise rube rubs ruer rues ruse sabe sari scab scar sear sera sice sire suba suer sura sure urbs urea uric ursa user