11
X^0:  12 
X^1:  
X^2:  
X^3:  11 
X^4:  8 
X^5:  
X^6:  10 
X^7:  
X^8:  4 
X^9:  9 
X^10:  6 
X^11:  3 11 
X^12:  0 
checksum: 85