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= "old"; and = "black"; represent
- No old rabbits are greedy.
- Some not-greedy rabbits are black.
- All white rabbits are free from greediness.
- All greedy rabbits are young.
No old rabbits are greedy; All black rabbits are greedy. All rabbits, that are not greedy, are black; No old rabbits are free from greediness.
= "well-fed"; and = "happy"; represent
All well-fed birds sing loud; No birds, that sing loud, are unhappy. All birds, that do not sing loud, are unhappy; No well-fed birds fail to sing loud.
= "John"; and = "having a tooth-ache"; represent
John is in the house; Everybody in the house is suffering from tooth-ache. There is no one in the house but John; Nobody, out of the house, has a tooth-ache.
[See pp. 68–70]