Masculine Nouns So we know feminine nouns are nouns ending in 'a' in their basic Nominative form and we know how to change the endings in the Accusative and Genetive cases.
We also know neuter nouns are nouns ending in 'e' or 'o' in their basic Nominative form and we know how to handle the endings in the Accusative and Genetive cases.
So that leaves everything else(!) which are masculine nouns.
Like neuter no changes are needed in the Accusative.
In Genetive ... we add a u to the end.
So we can update our table:

Access the table in Google Sheets here
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