| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been used [prep] | 154 |
|
| 2 | had been used [prep] | 150 |
|
| 3 | [vb past] been used for | 36 |
|
| 4 | [vb past] been used for | 36 |
|
| 5 | [vb past] been used by | 34 |
|
| 6 | [vb past] been used by | 34 |
|
| 7 | [vb past] been used in | 31 |
|
| 8 | [vb past] been used in | 31 |
|
| 9 | [vb past] been used as | 23 |
|
| 10 | [vb past] been used as | 23 |
|
| 11 | [vb past] been used to | 13 |
|
| 12 | [vb past] been used to | 13 |
|
| 13 | [vb past] been used on | 6 |
|
| 14 | [vb past] been used on | 6 |
|
