almost there :
? F H V Y B V Z X R N
A Q C Y A Z J S E O J
I V P W M X G V D U M
C Y M O K M T T W P T
D P W L O D X S F Q N
R Z D U O K J S c I A
Q M B U W Y J P U P V
P W J B N A R Z L H F
C X O F D P A H G W
could it be the matrix is 11 by 9 subdivided in 2 parts, what do you think Sir?