| I | muff | 
|---|---|
| you | muff | 
| he/she/it | muffs | 
| we | muff | 
| you | muff | 
| they | muff | 
| I | muffed | 
|---|---|
| you | muffed | 
| he/she/it | muffed | 
| we | muffed | 
| you | muffed | 
| they | muffed | 
| I | have | muffed | 
|---|---|---|
| you | have | muffed | 
| he/she/it | has | muffed | 
| we | have | muffed | 
| you | have | muffed | 
| they | have | muffed | 
| I | had | muffed | 
|---|---|---|
| you | had | muffed | 
| he/she/it | had | muffed | 
| we | had | muffed | 
| you | had | muffed | 
| they | had | muffed | 
无例句可用
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