Symmetric relations.
Signs of corresponding functions are different
Function interaction: 1 ↔ 3, 2 ↔ 2, 4 ↔ 4, 5 ↔ 7, 6 ↔ 6, 8 ↔ 8.

Functions 2, 4, 6, 8 respectively process the same infornation elements, which creates conditions for rather comfortable understanding within the field of information elements of these functions. While having different signs of functions, the partners have conprehensive coverage over the IE of the function 2 with the processing dimension up to "situation", which can be productive when working together on the subject of the respective information element. Considering that the function 2 is a creative function, cooperative creativity in this area has all chances to be efficient. 

What regards the interaction of the functions 1 ↔ 3, each of the partners will accept  directions of the partner's function 1 as competent and relevant. Both partners' function 4 processes the same information element which means that they cannot hurt much the pain functions of each other. Influence of the function 7 to the partner's function 5 feels like suggestion but is not satisfactory (compared to the duality relations), because id is often not verbalized and the partner's function blocking is different, making the 'suggestive' information element "sound" differently.  Both partners are activated  by information according to information element of  their function 6, however they cannot produce adeqate information feed of this element for each other because  their respective functions are low-dimensional and belong to the vital track.  Functions 8 of the partners have their individual experience contents and are subject to mutual adaptation in the process of long-term ralationships.