testOld
1 2 3 
2 
2 
3
1 2 3 
1 2 3 
0 1 2 3 4 5 6 7 8 9 
0 2 4 6 8 
0 2 4 6 8 
a b c 
b c 
b c 

testNew
3
1 2 3 
1 2 3 
0 1 2 3 4 5 6 7 8 9 
0 2 4 6 8 
0 2 4 6 8 
0 2 4 6 8 
0 2 4 6 8 
0 2 4 6 8 
0 2 4 6 8 
0 2 4 6 8 
a b c