| I | countersink | |
|---|---|---|
| you | countersink | |
| he/she/it | countersinks | |
| we | countersink | |
| you | countersink | |
| they | countersink |
| I | countersank | |
|---|---|---|
| you | countersank | |
| he/she/it | countersank | |
| we | countersank | |
| you | countersank | |
| they | countersank |
| I | have | countersunk | |
|---|---|---|---|
| you | have | countersunk | |
| he/she/it | has | countersunk | |
| we | have | countersunk | |
| you | have | countersunk | |
| they | have | countersunk |
| I | had | countersunk | |
|---|---|---|---|
| you | had | countersunk | |
| he/she/it | had | countersunk | |
| we | had | countersunk | |
| you | had | countersunk | |
| they | had | countersunk |
无例句可用
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