e2=1: 1 (100.00%)
e2=not 1
|    a=1
|    |    b=1: 1 (100.00%)
|    |    b=2: 0 (100.00%)
|    |    b=3: 0 (100.00%)
|    a=2
|    |    b=1: 0 (100.00%)
|    |    b=2: 1 (100.00%)
|    |    b=3: 0 (100.00%)
|    a=3
|    |    b=1: 0 (100.00%)
|    |    b=2: 0 (100.00%)
|    |    b=3: 1 (100.00%)

1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
1 1
