
The columns are the number of times a variable appears starting from Left to Right with x1



F1      4        0        0      1	0	0	0	0	5  
F2      1 	 0        0      1	0 	0	0	0	2		
F3      1	 0        5	 1  	0	0	0	0	7 
F4      1        2        0      0      3	0	0	0	5	
F5	1        0        0      0	0 	0	0	0	1
F6	1	 0	  0	 0	0	0	0	0	6
F7      1        2        0      0      3	0	0	0	6	
F8	1        0        0      0	0 	0	0	0	1

 
 
