Lets first begin by perfect rules:
1. Do not cause pain
2. Do not cause destruction of life
3. Do not cause reduction in happiness
4. Do not cause reduction in freedom
5. Do not cause decrease in knowledge
These are perfect rules because they cannot contradict each other. They are most perfect rules to follow, as neither part of them contradicts the other.
Now lets move onto non-perfect rules:
1. It is good to reduce pain and not cause pain.
2. It is good to save lives and not cause destruction of lives.
3. It is good to increase happiness and not cause destruction of happiness.
4. It is good to increase freedom and not cause destruction of freedom.
5. It is good to increase knowledge and not cause reduction in knowledge.
These are non-perfect rules right now, because they contradict each other and one often excludes the other.
But if we unite them together, contradiction disappears:
"It is good to reduce pain and save lives and increase happiness and increase freedom and increase knowledge and not cause pain and not destroy lives and not destroy happiness and not destroy freedom and not destroy knowledge."
This is perfect rule, as it can only be applied when all of its parts are true, so there is no contradiction between them as they only apply when they all are true.
So this rule and first list of perfect rules can work together, because first rules tell what shouldnt be done while this one tells whats good to be done.
