Navamsha calculation

Navamsha calculation always starts from Kaal Purusha Kendra (1, 4, 7, 10)

For any grah placed in Fire Rashi (1, 5, 9) ===; calculation begins from 1
For any grah placed in Earth Rashi (2, 6, 10)=====; calculation begins from 10
For any grah placed in Air Rashi (3, 7, 11)=======; calculation begins from 7
For any grah placed in Water Rashi (4, 8, 12)======;calculation begins from 4

For example:

Ascendant gets 6th Navamsha From Aries ====== Virgo

Jupiter gets gets 3rd navamsha from Aries=======Gemini
Moon gets  9th Navamsha from Aries==========Sag
Sun gets 9th Navamsha from Aries============Sag
Me gets 4th navamsha from Aries=============Cancer
Venus gets 8th Navamsha from Capricorn=======Leo
Saturn gets 6th Navamsha from Libra==========Pisces
Mars gets 7th Navamsha from cancer=========Capricorn
Ketu gets 3rd Navamsha from cancer==========Virgo
Rahu gets 3rd Navamsha from Capricorn=======Pisces