| Nominativ | investigabilis, investigabile, investigabilis, investigabile | investigabiles, investigabilia, investigabiles, investigabilia |
| Genitiv | investigabilis, investigabilis | investigabilum, investigabilium, investigabilum, investigabilium |
| Dativ | investigabili, investigabili | investigabilibus, investigabilibus |
| Akkusativ | investigabilem, investigabile, investigabilem, investigabile | investigabilis, investigabiles, investigabilia, investigabiles, investigabilia, investigabilis |
| Ablativ | investigabile, investigabili, investigabili, investigabile | investigabilibus, investigabilibus |
| Vokativ | investigabilis, investigabile, investigabilis, investigabile | investigabiles, investigabilia, investigabiles, investigabilia |
