So, as you can very well imagine the dhan yoga (or the combinations of wealth) are formed when one or more of the masters of house 1, house 2, house 5, house 9 and house 11 are involved.
When the masters of the above house form a combination by any one of the following the dhan yoga is created:
1. Sitting in one of the houses (1, 2, 5, 9 or 11)
This will happen when the master or the lord of (1, 2, 5, 9 or 11) is sitting in (1, 2, 5, 9 or 11).
2. Mutual exchange of signs between 2 signs out of (1, 2, 5, 9 or 11)
This will happen when masters of (1, 2, 5, 9 or 11) will exchange signs together. Example:
9th house in 2nd and 2nd lord in 9th;
11th house in 5th and 5th lord in 11th;
1st lord in 9th and 9th lord in 5th
OR
2nd lord in 9th, 9th lord in 11th, 11th lord in ascendant.
So, there can be several combinations, as you can see here, depending on permutations that you get out of (1, 2, 5, 9 or 11).
3. Conjunction with each other
Lords of (1, 2, 5, 9 or 11) sit together in any house. It is always better that they are together in (1, 2, 5, 9 or 11). It is also very good if the conjunction is formed in center or trine (1, 4, 5, 7, 9 or 10).