| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over several years | 24 |
|
| 2 | [noun sg] over several years | 15 |
|
| 3 | [vb pp] over several years | 9 |
|
| 4 | [verb] over several years | 9 |
|
| 5 | [adv] over several years | 5 |
|
| 6 | over several years [prep] | 6 |
|
| 7 | over several years [prep] | 6 |
|
