bagan, beagen, berdan, bergeman, bergemann, bergin, bergman, bergmann, bergsten, bergum, berken, berman, berson, berton, birden, birman, birren, bogan, bogen, boggan, bourbon, burden, burdon, burgan, burgeon, burgin, burgman, burgoon, burman, burson, burton, durgan, gergen, juergen, jurgen, kirgan, mergen, yeargain, yeargan, yergin, bergan