Can a punch biopsy show CC? Yes
Will your biopsy show CC? most pobably not. Cin 2 is a long way away from Cancer and if they thought there was a likelihood of Cancer they would probably of taken a bigger sample. Also bad news tends to travel faster. So although I sympathise with your long wait for results it is actually a positive thing.
Waiting for results is always the very worst time. Try and keep busy, and try (and I know it's almost impossible!) to not let your mind run away with you.
Good luck with your results!