| I | double-book | 
|---|---|
| you | double-book | 
| he/she/it | double-books | 
| we | double-book | 
| you | double-book | 
| they | double-book | 
| I | double-booked | 
|---|---|
| you | double-booked | 
| he/she/it | double-booked | 
| we | double-booked | 
| you | double-booked | 
| they | double-booked | 
| I | have | double-booked | 
|---|---|---|
| you | have | double-booked | 
| he/she/it | has | double-booked | 
| we | have | double-booked | 
| you | have | double-booked | 
| they | have | double-booked | 
| I | had | double-booked | 
|---|---|---|
| you | had | double-booked | 
| he/she/it | had | double-booked | 
| we | had | double-booked | 
| you | had | double-booked | 
| they | had | double-booked | 
