| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been used for [noun sg] | 11 |
|
| 2 | have been used for [noun sg] | 9 |
|
| 3 | had been used for [noun sg] | 8 |
|
| 4 | have been used for [noun sg] | 7 |
|
