thank you very much Kamclean , I used Hcompv and I found the following results

HResults -A -D -T 1 -e ??? sil -I ref.mlf hmmlist.txt rec.mlf

No HTK Configuration Parameters Set

====================== HTK Results Analysis =======================
  Date: Fri Nov 05 22:28:55 2010
  Ref : ref.mlf
  Rec : rec.mlf
------------------------ Overall Results --------------------------
SENT: %Correct=-1.#J [H=0, S=0, N=0]
WORD: %Corr=-1.#J, Acc=-1.#J [H=0, D=0, S=0, I=0, N=0]
===================================================================

No HTK Configuration Parameters Set

apparently, the phrase I used was not recognized?

--- (Edited on 11/5/2010 5:35 pm [GMT-0500] by mawahib) ---