Love-marriage combinations in Vedic astrology

In Vedic astrology, there are multiple ways to look at love-marriage combinations / indicators.

5th house lord aspects 7th house lord

5th house lord aspects 7th lord

7th house lord aspects 5th house

7th house lord aspects 5th lord

7th house lord aspects 5th lord and 5th lord aspects 7th lord

7th house lord aspects 5th house and 5th house lord aspects 7th house

7th house lord aspects 5th house and 5th house lord aspects 7th lord

7th house lord aspets 5th lord and 5th house lord aspects 7th house

Mars or Venus aspecting each other

Mars aspecting Venus

Venus aspecting Mars

Mars aspecting one of the Venus signs

Rahu aspects 7th Lord

Rahu aspects the 7th house

7th lord aspecting 9th house and lord of 9th 12th aspecting 7th house

In D9 Navamsa/Navamsha ascedant lord and 7th lord are conjunct

In D9 Navamsa/Navamsha 5th house lord and 7th lord are conjunct

In D9 Navamsa/Navamsha Mars conjunct Venu and vice versa