| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] for many years | 68 |
|
| 2 | been [vb pp] for many years | 54 |
|
| 3 | been [v-ing] for many years | 14 |
|
| 4 | been use for many years | 11 |
|
| 5 | been used for many years | 11 |
|
| 6 | been know for many years | 10 |
|
| 7 | been known for many years | 10 |
|
