multicast access-list question

From: dusth@comcast.net
Date: Fri Sep 03 2004 - 12:12:58 GMT-3

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Hi all,
I have a question on multicast acl. Could any one explain for me differences b/t these 2 acl.
Solution book:
access-list 51deny 239.0.0.0 0.255.255.255
access-list 51 deny 224.0.0.0 1.255.255.255
access-list 51 permit 224.0.0.0 15.255.255.255
Can I use as follow acl configuration instead? If no, then why can't I? Though 224, 225, and 239 subnet will be implicitly deny, or because this acl is multicast acl so have to be configure the deny statement.
access-list 51 permit 226.0.0.0 12.255.255.255

Thanks in advance
Dustin

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