1 |
1. i :
2. j :
3. (1 | i & 1 | j & ( z: . z | i & z | j  z | 1))
1 | i
 | 1 step |
2 |
1. i :
2. j :
3. (1 | i & 1 | j & ( z: . z | i & z | j  z | 1))
1 | j
 | 1 step |
3 |
1. i :
2. j :
3. (1 | i & 1 | j & ( z: . z | i & z | j  z | 1))
4. z :
5. z | i
6. z | j
z | 1
 | 2 steps |