Need help to design this circuit, please proved the truth table.

Design a unsigned 2-bit counter using J-K flip-flops that increments by one on each clock cycle 0,1,2,3,0,1,2,3,0,... unless an external input R is turned on, which will reset the counter to 0 instead. You need to show the truth table for the circuit and find a simplified expression for each output using a K-map. Show ALL of your work and draw the final circuit.