Q- Can we design a MOD-6 counter using the above method?
Ans: We firstly draw the state diagram

And now we draw the table to represent the desired output of the combinational circuit to reset FFs as:
Q2 Q1 Q0 OUTPUT
0 0 0 1
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 0
1 1 1 0
And using K-map we get the combinational circuit as

And the complete circuit is as: