Either it's changing things, or you just don't know your letters.

Neither of them knew his letters when I went there.

"Knowing your letters, and not having dreams, you might yet make a good scrivener."

One of the problems I have is that too few people know their letters, and they learn them too late.

When a child knew his letters and could spell out simple words, he was ready to tackle a text in English.

"When I first started I already knew my letters," he said.

He knows all his letters and can sound out words, though fluent reading still eludes him.

He was not surprised the herder chief knew his letters.

He knows all his letters, at least up to M, anyway.

Frances knew Jack's letters off by heart, but every time she read them over, a knife turned inside her.