How many covens are there in twilight?

This is what it says at the back of Breaking dawn: *Vampire possesses a quantifiable supernatural talent - Bonded pair (oldest listed first) struck deceased before beginning of this novel Alphabetically by coven: The Amazon Coven Kachiri Senna Zafrina* The Denali Coven Eleazar* - Carmen Irina - Laurent Kate* Sasha Tanya Vasilii The Egyptian Coven Amun - Kebi Benjamin* - Tia The Irish Coven Maggie* Siobhan* - Liam The Olympic Coven Carlisle - Esme Edward* - Bella* Jasper* - Alice* Renesmee* Rosalie* - Emmett The Romanian Coven Stefan Vladimir The Volturi Coven Aro* - Sulpicia Caius - Athenodora Marcus* - Didyme Th Volturi Guard (partial) Alec* Chelsea* - Afton* Corin* Demetri* Felix Heidi* Jane* Renata* Santiago The American Nomads (partial) Garrett James* - Victoria* Mary Peter - Charlotte Randall The European Nomads (partial) Alistair* Charles* - Makenna