@@25@@
20/\Wvi(e|ệ)t\s?nam\W/, /\Wvietnam\swar\W/
20/\Wvietnamese\W/
/\Wan\s?nam\W/
/\Wc(a|ầ)n\sth(o|ơ)\W/
/\Wchampa\W/
/\Wcochinchin(a|e)\W/
/\Wd(a|à)\s?n(a|ẵ)ng\W/
/\W(d|đ)(o|ô)ng\sb(a|ắ)c\W/
/\W(d|đ)(o|ô)ng\sb(a|ằ)ng\ss(o|ô)ng\W/
/\W(d|đ)(o|ô)ng\snam\sb(o|ộ)\W/
/\Wh(a|à)\s?n(o|ộ)i\W/
/\Wh(a|ạ)\s?long\W/
/\Wh(a|ả)i\s?ph(o|ò)ng\W/
/\Whuế\W/
/\Wh(o|ồ)\sch(i|í)\sminh\W/
/\Wh(o|ộ)i\san\W/
/\Wmekong\sdelta\W/
/\Wnha\strang\W/
/\Wred\sriver\sdelta\W/
/\Wsai\s?gon\W/
/\Wt(a|â)y\sb(a|ắ)c\W/
/\Wtonkin\W/
/\Wtourane\W/
/\Wtrung\sb(o|ộ)\W/
/\Wvi(e|ệ)t\sminh\W/
/\Wvi(e|ệ)t\W/, /\Wvi(e|ệ)t\s?nam\W/, /\Wvietnamese\W/, /\Wvi(e|ệ)t\sminh\W/
/\Wv(i|ĩ)nh\W/
5/\Wb(i|ì)nh\W/
5/\Windochin(a|ese)\W/, /\Windochina\swar\W/
5/\Wm(i|ì)nh\W/, /\Wh(o|ồ)\sch(i|í)\sminh\W/
5/\Wnguy(e|ễ|ệ)n\W/
5/\Wtr(i|ị)nh\W/
5/u(y|ỳ)nh\W/
5/ấ/
5/ầ/
5/ắ/
5/ằ/
5/ẫ/
5/ẵ/
5/ẩ/
5/ẳ/
5/ậ/
5/ặ/
5/ả/
5/ế/
5/ề/
5/ễ/
5/ể/
5/ệ/
5/ố/
5/ồ/
5/ỗ/
5/ổ/
5/ớ/
5/ờ/
5/ỡ/
5/ộ/
5/ở/
5/ợ/
5/ơ/
5/ứ/
5/ừ/
5/ữ/
5/ử/
5/ự/
5/ư/