Mon, 22 Mar 2010 22:42:34 -0700 huffman remove unused syntax for as_pat, lazy_pat
Mon, 22 Mar 2010 22:41:41 -0700 huffman add lemmas fst_monofun, snd_monofun
Mon, 22 Mar 2010 21:37:48 -0700 huffman use Pair instead of cpair
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