| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not been [verb] [prep] a | 86 |
|
| 2 | not [been] [vb pp] [prep] a | 82 |
|
| 3 | not [been] [verb] by a | 20 |
|
| 4 | not [been] [verb] for a | 19 |
|
| 5 | not [been] [verb] as a | 17 |
|
| 6 | not [been] [verb] in a | 9 |
|
| 7 | not [been] [verb] to a | 8 |
|
| 8 | not [been] used [prep] a | 5 |
|
| 9 | not [been] use [prep] a | 5 |
|
