A 1  2  
A 7  10 
A 15 20 
B 3  5  
B 11 15  
C 5  10  
D 10 20  

##</code><code>##

ID 1 2 3 5 7 10 11 15 20 
A  1 1 0 0 1 1  0  1  1 
B  0 0 1 1 0 0  1  1  0 
C  0 0 0 1 1 1  0  0  0 
D  0 0 0 0 0 1  1  1  1