y'all'd'nt've'd'd'i'd'nt've'd'y'all't've'd

The longest gramatically correct contraption, which means "You all would not have had, had I had not have had you all to have had."

P 1: We did it.
P 2: y'all'd'nt've'd'd'I'd'nt've'd'y'all't've'd

112👍 5👎