| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [been] used [prep] | 76 |
|
| 2 | [vb mod] have [been] used [prep] | 76 |
|
| 3 | [vb mod] [verb] been used [prep] | 76 |
|
| 4 | [vb mod] [vb infin] [been] used [prep] | 76 |
|
| 5 | could [verb] [been] used [prep] | 23 |
|
| 6 | may [verb] [been] used [prep] | 22 |
|
| 7 | [vb mod] [verb] [been] used by | 21 |
|
| 8 | [vb mod] [verb] [been] used in | 18 |
|
| 9 | [vb mod] [verb] [been] used for | 15 |
|
| 10 | [vb mod] [verb] [been] used as | 13 |
|
| 11 | would [verb] [been] used [prep] | 12 |
|
| 12 | might [verb] [been] used [prep] | 11 |
|
| 13 | must [verb] [been] used [prep] | 6 |
|
