1. Identify which of the five nouns you have.
2. For the first four, first check that the noun is singular and mudaf; remember ذُو is always mudaf here.
3. Decide nominative, accusative, or genitive, then choose و، ا، or ي.
4. Check the exceptions: yā-mutakallim keeps one visible form; dual/plural uses its own patterns.
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A Four-Step Check
The Five Nouns: Core Case Forms
1. Identify which of the five nouns you have.
2. For the first four, first check that the noun is singular and mudaf; remember ذُو is always mudaf here.
3. Decide nominative, accusative, or genitive, then choose و، ا، or ي.
4. Check the exceptions: yā-mutakallim keeps one visible form; dual/plural uses its own patterns.