$generate ip6.arpa

[Bigman]

Hi,

I' wondering if it is able to generate more than 15 IPv6 PTR records
using $GENERATE.
Now my reverse zone file looks like this

$ttl 38400
0.9.d.5.b.d.1.c.2.0.0.2.ip6.arpa.       IN      SOA     ns1.potencial.us. hostmaster.potencial.us. (
                        2006040837
                        3600
                        3600
                        604800
                        38400 )
0.9.d.5.b.d.1.c.2.0.0.2.ip6.arpa.       IN      NS      ns1.potencial.us.
$ORIGIN 0.9.d.5.b.d.1.c.2.0.0.2.ip6.arpa.
$GENERATE 1-15 ${0,0,x}.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 PTR ${0,0,d}.myhost.com

It generates just 15 PTR records. How could i generate records for
/112 or something like that?
It could be done with bitstring but not it's not supported in BIND.
Im using BIND 9.3.2