<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <link rel="stylesheet" href="common.css"> </head> <body> abcd<rbc> BASE</rbc><rt>TEXT</rt> abcd<rbc> <span>BASE</span></rbc><rt>TEXT</rt> abcd<rbc><span> BASE</span></rbc><rt>TEXT</rt> <rbc> </rbc> </body> </html>
