| I | differentiate | |
|---|---|---|
| you | differentiate | |
| he/she/it | differentiates | |
| we | differentiate | |
| you | differentiate | |
| they | differentiate |
| I | differentiated | |
|---|---|---|
| you | differentiated | |
| he/she/it | differentiated | |
| we | differentiated | |
| you | differentiated | |
| they | differentiated |
| I | have | differentiated | |
|---|---|---|---|
| you | have | differentiated | |
| he/she/it | has | differentiated | |
| we | have | differentiated | |
| you | have | differentiated | |
| they | have | differentiated |
| I | had | differentiated | |
|---|---|---|---|
| you | had | differentiated | |
| he/she/it | had | differentiated | |
| we | had | differentiated | |
| you | had | differentiated | |
| they | had | differentiated |