| I | interchange |
|---|---|
| you | interchange |
| he/she/it | interchanges |
| we | interchange |
| you | interchange |
| they | interchange |
| I | interchanged |
|---|---|
| you | interchanged |
| he/she/it | interchanged |
| we | interchanged |
| you | interchanged |
| they | interchanged |
| I | have | interchanged |
|---|---|---|
| you | have | interchanged |
| he/she/it | has | interchanged |
| we | have | interchanged |
| you | have | interchanged |
| they | have | interchanged |
| I | had | interchanged |
|---|---|---|
| you | had | interchanged |
| he/she/it | had | interchanged |
| we | had | interchanged |
| you | had | interchanged |
| they | had | interchanged |