RewriteEngine on
RewriteRule  ^all/index_([0-9]+).html$  index.php?mod=index&id=$1  [L]
RewriteRule  ^book/([0-9]+)/index.html$  index.php?mod=book&bookid=$1  [L]
RewriteRule  ^book/([0-9]+)_([0-9]+)/index.html$  index.php?mod=bookx&bookid=$1&id=$2  [L]
RewriteRule  ^book/([0-9]+)/([0-9]+).html$  index.php?mod=bookview&bookid=$1&id=$2  [L]
RewriteRule  ^book/([0-9]+)_([0-9]+)/([0-9]+).html$  index.php?mod=bookviewx&bookid=$1&idx=$2&$id=$3  [L]
RewriteRule  ^book/([0-9]+)/vip_([0-9]+).html$  index.php?mod=vipview&bookid=$1&id=$2  [L]
RewriteRule  ^all/vip([0-2])_index_([0-9]+).html$  index.php?mod=vip&vip=$1&id=$2  [L]
RewriteRule  ^sort([0-9]+)/index_([0-9]+).html$  index.php?mod=sort&sortid=$1&id=$2  [L]
RewriteRule  ^sort([0-9]+)/vip([0-2])_index_([0-9]+).html$  index.php?mod=sortvip&sortid=$1&vip=$2&id=$3  [L]