The two groups of houses of the horoscope and the connections of their lords
The houses of the horoscope fall into two groups:
a) the 1st, 4th, 7th, 10th, 5th, 9th, 2nd and 11th houses [these are the «good houses» — the kendras, the trikonas and the houses of money]
b) the 3rd, 6th, 8th and 12th houses [these are the «bad houses» — the dusthanas]
A connection of the owners of houses from the first group gives positive results.
A connection of the rulers of houses from the second group also brings good fruits.
A connection of the lords of houses from the first group with the rulers of houses from the second group carries bad consequences.
Sri Govind Swarup Agarwal — «Vedic Astrology»

