XOR gate doubt

Here XOR & XNOR developed by using CMOS(NMOS & PMOS). We use input A(1kHz 5v clock pulse),A'(by CMOS inverter and giving input A),B(2kHz 5v clock pulse),B'(by CMOS inverter and giving input A) After getting XOR output,to get XNOR we use CMOS inverter. For CMOS inverter see https://www.multisim.com/content/hEtS2JePA52vcjgDZHTswD/cmos-inveter/