How to understand Mutual Relationship between Planets?

According to Satyacharya, the lord of the Rasis (Signs) falling in the 2nd, 4th, 5th, 8th, 9th and 12th from the Mulatrikona of a Graha (Planet) are friendly to that Graha.

How Planets vibes (or feels) with each other in Astrology? (Graha Sambandha)

There are Groups of planets which go good with each other and then there are planets which shows clashes.