| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] have been [verb] [prep] a | 220 |
|
| 2 | [Wh det] have been [vb pp] [prep] a | 209 |
|
| 3 | [pron] have been used [prep] a | 27 |
|
| 4 | [Wh det] have been used [prep] [art] | 16 |
|
| 5 | [Wh det] have been used [prep] [art] | 16 |
|
| 6 | [Wh det] have [been] used [prep] a | 6 |
|
| 7 | [Wh det] have be used [prep] a | 6 |
|
| 8 | [Wh det] have [be] used [prep] a | 6 |
|
| 9 | [Wh det] have been used [prep] a | 6 |
|
| 10 | [Wh det] have been use [prep] a | 6 |
|
| 11 | [Wh det] [verb] been used [prep] a | 6 |
|
