use matlab code please. The following is the ciphertext of a Hill cipher

zirkzwopjjoptfapuhfhadrq

using the matrix

$1$

$2$

$3$

$4$

$4$

$3$

$2$

$1$

$11$

$2$

$4$

$6$

$2$

$9$

$6$

$4$

$.$

Decrypt.