Input (grade 13): Sand dunes are preserved in Permian sandstones near Brodick, there are localized outcrops of Triassic rocks and even a rare example of Cretaceous chalk.
Output (grade 11): Sand dunes are preserved in Permian sandstones near Brodick, there are localized outcrops of Triassic rocks, p143\/4\/9 and even some Cretaceous chalk.