| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not been [vb pp] [prep] [det] years | 7 |
|
| 2 | not [been] [vb pp] [prep] [det] years | 6 |
|
| 3 | not [been] [vb pp] for [det] years | 6 |
|
| 4 | not [been] [vb pp] [prep] many years | 5 |
|
