Part 1: According to the order of the Sefirot… i.e. in terms of the number of levels that make up the developmental chain. …as built through Chochmah and Binah… For the building of Zeir Anpin is through Chochmah and Binah – the Pregnancy and Birth of Zeir Anpin come about through Abba and Imma. Even when Abba and Imma enter and become engrafted in Zeir Anpin, this does not change anything in regard to Nukva being the tenth Sefirah of Zeir Anpin.
Zeir Anpin consists of nine Sefirot while Nukva is the tenth. For Zeir Anpin is considered as ten when we reckon Keter-Chochmah-Binah. It can likewise be said that Zeir Anpin is Six Directions while Nukva ranks as seventh after them. This is during immaturity, when Zeir Anpin has only six Sefirot and Nukva is considered the seventh – just as she is considered tenth to Zeir Anpin when he attains his maturity: Nukva is always considered the last Sefirah of Zeir Anpin and is thus only one Sefirah after all those of Zeir Anpin.