again:--

  `I didn't know that Cheshire cats always grinned; in fact, I
didn't know that cats COULD grin.'

  `They all can,' said the Duchess; `and most of 'em do.'

  `I don't know of any that do,' Alice said very politely,
feeling quite pleased to have got into a conversation.

  `You don't know much,' said the Duchess; `and that's a fact.'

  Alice did not at all like the tone of this remark, and thought