| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] year have been [to-vb] | 13 |
|
| 2 | [adj] year have been [to-vb] | 6 |
|
| 3 | recent year have been [to-vb] | 5 |
|
| 4 | recent year have been [to-vb] | 5 |
|
| 5 | year have been [verb] [to-vb] | 11 |
|
| 6 | year have been [vb pp] [to-vb] | 9 |
|
| 7 | year have been [adj] [to-vb] | 7 |
|
| 8 | year have been [adj] [to-vb] | 7 |
|
| 9 | year have been [to-vb] [art] | 6 |
|
| 10 | year have been [to-vb] [art] | 6 |
|
