def find_base_style(masters):
if not masters:<EOL><INDENT>return "<STR_LIT>"<EOL><DEDENT>base_style = (masters[<NUM_LIT:0>].name or "<STR_LIT>").split()<EOL>for master in masters:<EOL><INDENT>style = master.name.split()<EOL>base_style = [s for s in style if s in base_style]<EOL><DEDENT>base_style = "<STR_LIT:U+0020>".join(base_style)<EOL>return base_style<EOL>
Find a base style shared between all masters.
    Return empty string if none is found.