The XNOR/XOR/NOT module can be patched as two NOT gates and one 2-input XOR gate,
one NOT gate, one 2-input XOR gate and one 2-input XNOR/XOR gate,
two 2-input XNOR/XOR gates
or one NOT gate and one 3-input XNOR/XOR gate.
Gate one and two has two inputs, the third has one. The XOR out from gate one is being normalled to input 1 on gate two. The XOR out from gate two is being normalled to the single input on gate three (NOT).