| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [num] years [adv] | 45 |
|
| 2 | have been [vb pp] [num] [noun] before | 15 |
|
| 3 | have been [vb pp] [num] [noun pl] before | 15 |
|
| 4 | have been [vb pp] [adj] years before | 13 |
|
| 5 | have [been] [vb pp] [num] years before | 10 |
|
| 6 | have been [vb pp] [num] year before | 10 |
|
| 7 | have [be] [vb pp] [num] years before | 10 |
|
| 8 | have been [verb] [num] years before | 10 |
|
| 9 | [verb] been [vb pp] [num] years before | 10 |
|
| 10 | have be [vb pp] [num] years before | 10 |
|
