Durudhara completes the lunar group: planets on both sides of the Moon, in the second and the twelfth from it, so that the Moon is attended in both directions. It is read as the strongest of the four and is credited with resources, comfort and support from others.
Seen together the four make an unusually clean structure. One variable, whether each neighbouring sign is occupied, generates four cases, and every chart falls into exactly one. Both sides occupied is Durudhara, the second only is Sunapha, the twelfth only is Anapha, neither is Kemadruma. Nothing else is possible.
That tidiness is the set's strength and its limitation. It is easy to apply and impossible to dispute, since no judgement is involved in determining which case a chart shows. But it is also a partition of a single variable, and it distributes all charts among four buckets whose meanings were assigned by the logic of the partition rather than derived from anything outside it. Three of the four are favourable and one is not, which is roughly the distribution the geometry produces.
The atlas records the set as the tradition states it, notes the structure, and takes no position on whether the lunar combinations describe anything. Nothing here is a prediction about any person.