SUBERIFORM

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berm bier bios biro birr bise bore brie brim brio bris bros bumf bums burr burs emir emus eros errs euro fems feus fibs fire firm firs fobs foes forb fore form four froe from fubs fume furs fuse ires meou mibs mire mirs mise miso mobs more mors moue mure murr muse obes obis omer orbs ores ours rebs refs reif reis rems ribs rife rifs rime rims rise robe robs roes roms rose roue rube rubs ruer rues rums ruse seif semi serf sire some sorb sore sori sour suer sumo sure surf umbo urbs user