"Turn left and then turn right."
Translation:Trowch i'r chwith ac wedyn trowch i'r dde.
Almost but not quite! 'Y dde' - the right. 'Y de' - the south. As nouns 'de' (right) is feminine and 'de' (south) is masculine.
At one time, the word for south was 'deau/deheu' and life was much easier for map readers and direction givers...