Rule 1 | If e is N and de is N then control is N. |
Rule 2 | If e is Z and de is N then control is N. |
Rule 3 | If e is P and de is N then control is Z. |
Rule 4 | If e is N and de is Z then control is N. |
Rule 5 | If e is Z and de is Z then control is Z. |
Rule 6 | If e is P and de is Z then control is P. |
Rule 7 | If e is N and de is P then control is Z. |
Rule 8 | If e is Z and de is P then control is P. |
Rule 9 | If e is P and de is P then control is P. |