hello, I want to write a grammar for phone but knowing that the unit is the word not the phoneme,

one, two........,nine

I wrote this grammar:

/*
* Task grammar
*/


$digit0 = zero;$digit2= deux;$digit6= six;$digit3= trois;$digit7= sept;$digit9= neuf;$digit1= un;$digit5= sinq;$digit8= huit;$digit4= quatre;

({ $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4 $digit0 $digit2 $digit6 $digit3 $digit7 $digit9 $digit1 $digit5 $digit8 $digit4} )

because in train signals, the number is pronounced as follows

0 2 6 3 7 9 1 5 8 4

10 times in each file. sig of train signals.

Normally, if we use the same files for the train in test, we get the recognition rate = 100% but my problem is that the recognition rate = 60%
why ??????? I can not find the cause?? please can you help me? it is very urgent.

╚════════════════════════════════════════════════════╝
* Valeur de la ligne : HResults -I ref.mlf hmmlist.txt rec.mlf

====================== HTK Results Analysis =======================
  Date: Mon Apr 25 11:46:28 2011
  Ref : ref.mlf
  Rec : rec.mlf
------------------------ Overall Results --------------------------
SENT: %Correct=60.00 [H=6, S=4, N=10]
WORD: %Corr=99.60, Acc=99.60 [H=996, D=0, S=4, I=0, N=1000]
===================================================================