| I | sham |
|---|---|
| you | sham |
| he/she/it | shams |
| we | sham |
| you | sham |
| they | sham |
| I | shammed |
|---|---|
| you | shammed |
| he/she/it | shammed |
| we | shammed |
| you | shammed |
| they | shammed |
| I | have | shammed |
|---|---|---|
| you | have | shammed |
| he/she/it | has | shammed |
| we | have | shammed |
| you | have | shammed |
| they | have | shammed |
| I | had | shammed |
|---|---|---|
| you | had | shammed |
| he/she/it | had | shammed |
| we | had | shammed |
| you | had | shammed |
| they | had | shammed |