Prueba así
Código:
Options +FollowSymLinks
RewriteEngine on
Rewriterule ^(.*)/(.*)/(.*)/?$ index.php?pagina=$1&id=$2&f=$3
Rewriterule ^(.*)/(.*)/?$ index.php?pagina=$1&id=$2
Rewriterule ^(.*)/?$ index.php?pagina=$1
Si no va, prueba quitando los /? o sea así:
Código:
Options +FollowSymLinks
RewriteEngine on
Rewriterule ^(.*)/(.*)/(.*)$ index.php?pagina=$1&id=$2&f=$3
Rewriterule ^(.*)/(.*)$ index.php?pagina=$1&id=$2
Rewriterule ^(.*)$ index.php?pagina=$1