((h6,b6)* & ((#PCDATA|b|i|strike|sub|sup|tt|u|cite|code|dfn|em|kbd|q|samp| strong|var|a|applet|basefont|br|font|img|map|span|bdo|input| select|textarea|p|ul|ol|dir|menu|dl|pre|div|blockquote|form|hr| table|address)*)*)