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