| I | envelop | 
|---|---|
| you | envelop | 
| he/she/it | envelops | 
| we | envelop | 
| you | envelop | 
| they | envelop | 
| I | enveloped | 
|---|---|
| you | enveloped | 
| he/she/it | enveloped | 
| we | enveloped | 
| you | enveloped | 
| they | enveloped | 
| I | have | enveloped | 
|---|---|---|
| you | have | enveloped | 
| he/she/it | has | enveloped | 
| we | have | enveloped | 
| you | have | enveloped | 
| they | have | enveloped | 
| I | had | enveloped | 
|---|---|---|
| you | had | enveloped | 
| he/she/it | had | enveloped | 
| we | had | enveloped | 
| you | had | enveloped | 
| they | had | enveloped |