大约有几十个，
balloon barchan bargain baseman bassoon bastion batsman beadman beclown
bedeman bedgown bedizen bedouin beechen begroan bellman benison benzoin
betaken bethorn betoken between bighorn billion biotron birchen birdman
bittern blacken blouson blowgun bluefin boatman bodhran bogbean bogyman
bondman bookman boomkin botulin bounden bourbon bourdon bracken bradoon
brechan bridoon broaden buckeen buffoon bullion bullpen bumpkin burgeon
burthen bushman butyrin
其中man结尾的，还有men的变化，没有列出来。
