The inflection-table template for Greek nouns declining like πατέρας (patéras). Other examples may be found in the Category:Greek nouns declining like 'πατέρας'.
The syntax {{el-nM-ας-ες-2d|πατέρ|πατερ}} produces the table:
| singular | plural | |
|---|---|---|
| nominative | πατέρας (patéras) | πατέρες (patéres) |
| genitive | πατέρα (patéra) πατέρας (patéras) |
πατερών (paterón) |
| accusative | πατέρα (patéra) | πατέρες (patéres) |
| vocative | πατέρα (patéra) | πατέρες (patéres) |
The second genitive singular is a colloquial feminine form.
A full list of other declension-table templates with a brief indication of use can be found at Wiktionary:Greek noun inflection-table templates.