The entry of Abba and Imma into Zeir Anpin generates additional Partzufim: Jacob and Leah and the diagonals.
Abba and Imma's entry into Z"A generates additional Partzufim — Jacob and Leah and the diagonals. The cosmic government has coupling-modes variability operationally.
Op. 117 specifies the additional Partzufim that emerge when Abba and Imma enter Z"A. The cosmic government does not have just Z"A and Nukva at the operational level; it has Z"A + Rachel, Z"A + Leah, Jacob + Leah, Jacob + Rachel — four coupling-modes in total.
The coupling-modes variability is structurally important. The cycle requires different operational modes at different times. When the cycle's current phase requires visible governance (the standard operational mode), Israel + Rachel operates (or Z"A + Rachel). When the cycle requires inner-truth governance, Jacob + Leah operates. When other modes are required, the corresponding combinations operate.
Jacob is a sub-Partzuf of Z"A — Z"A in a specific operational mode (the inner Z"A). Leah is a sub-Partzuf of Nukva — Nukva drawn from the hind parts of Imma (Op. 118). Rachel is Nukva proper — Nukva in her primary Partzuf-form. The four combinations give the cosmic government its operational variability.
The diagonals are additional structural features of how these Partzufim relate. The cosmic-operational geometry is more intricate than the two-Partzuf picture would suggest.
Op. 118 (Leah — the hind parts of Imma and inner soul of Nukva). The closing chapters operate with full coupling-modes variability.