Back bending, an overview

My focus is back bending.

How many back bending asanas has Ashtanga yoga, I wondered.

Primary:
1. Setu bandhasana
2. Urdhva dhanurasna

Second Series:
1. Salabhasana A and B
2. Bhekasana
3. Dhanurasana
4. Parsva dhanurasana
5. Ustrasana
6. Laghu vajrasana
7. Kapotasana A and B
8. Supta vajrasana
9. Urdhva dhanurasana

Advanced A:
1. Viparita dandasana
2. Eka pada viparita dandasana
3. Viparita Salabhasana (not possible for me anymore)
4. Ganda Bherundasana (in my next life)
5. Natarajana
6. Raja kapotasana
7. Eka pada raja kapotasana
8. Urdhva dhanurasana
9.. Urdhva dhanurasana

Advanced B:
1. Padangustha Dhanurasana A and B
2. Eka Pada Dhanurasana
3. Eka Pada Kapotasana
4. Parivrttasana A and B
5. Urdhva dhanurasana

OK, I give in. Kapotasana is my next Himalaya. Sometimes it requires many many attempts to climb up this mountain.