| Singular | Plural | |
|---|---|---|
| Nominativ | cryptoporticus | cryptoporticus, cryptoporticuus |
| Genitiv | cryptoporticus, cryptoportici, cryptoporticos | cryptoporticum, cryptoporticuum |
| Dativ | cryptoporticui, cryptoporticu | cryptoporticibus, cryptoporticubus |
| Akkusativ | cryptoporticum | cryptoporticus, cryptoporticuus |
| Ablativ | cryptoporticu | cryptoporticibus, cryptoporticubus |
| Vokativ | cryptoporticus | cryptoporticus, cryptoporticuus |