| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | years there have been [art] [adj] | 53 |
|
| 2 | years there have been [art] [adj] | 53 |
|
| 3 | years there have been a [adj] | 50 |
|
| 4 | years there has been [art] [adj] | 47 |
|
| 5 | years there have been a [adj] | 36 |
|
| 6 | years there have been an [adj] | 14 |
|
| 7 | years there have been [art] major | 5 |
|
| 8 | years there have been [art] major | 5 |
|
