Anima Astrologiae or A Guide for Astrologers by William Lilly 1676

The 69th is to Consider, Whether the significators of the Ascendant, and of the House signifying the thing enquired, be of equal strength and debility? For then thou canst not safely give judgment: but in such case thou must mind the Lord of the Conjunction or Prevention (as the thing is either conjunctional or preventional) which was last before, and by that judge, but if the Lord of the Conjunction or Prevention, and of the things, be still equal, thou must then turn to the Moon, and see to whom she first applies, and thence  deduce judgment. If she join not to any in or from the Sign in which she is, take that with whom she joins first in the next Sign, and this is very considerably useful.

70.Whether the Lord of the New or Full Moon preventional, be in any of the Angles