The ‘ou’ digraph is a common grapheme in written English and it’s found in a variety of high-frequency words that early readers are likely to encounter. These include words such as ‘out’, ‘about’, ‘house’ and ‘mouse’.

The letters oo are used to spell two slightly different sounds. These words have the short oo sound as in book. I could see from his smile that he was in a good mood. Could you chop some wood for the fire? We cook in the kitchen. He tried not to look into the bright light.