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bursiform

rubiform ursiform

fibrous subform suiform

biform birrus borism burfis burrio burros fibros forums furors morbus morris murris obfirm rimous rosbif rumbos rumors sbirro

biros birrs bisom borms bouri bourr brims brios bufos bumfs burfi burro burrs fibro firms forbs forms forum fourb fours fribs furor furrs irous mbori miros morus muirs murri murrs ombus orris rimus robur roums rubor rumbo rumor smirr smurr souir umbos

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