半局与六合谁强?

When month branch has both half combination and six combine and one from the same gang (印劫) and the other is different gang (伤财官) then which will dominate the month branch? This will determine the strength of the day master and decide which are the Useful Ten Gods 喜用神 and elements.
Take an example. He was born on 23 Jan 1949. His month branch 丑 combined with 子 to form earth. At the same time this 丑 half combine with 酉 to form metal. If metal is stronger than he is a strong daymaster. If earth is stronger than he is a weak daymaster. Now the question is which combination is stronger? 丑 combined with 子 or丑 half combine with 酉?
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