| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [adv] over a [adj] period | 16 |
|
| 2 | [vb pp] [adv prt] over a [adj] period | 11 |
|
| 3 | [vb pp] [adv] over a long period | 7 |
|
| 4 | [vb pp] [adv] over a [adj] period | 7 |
|
| 5 | [vb pp] in over a [adj] period | 5 |
|
| 6 | [vb pp] out over a [adj] period | 5 |
|
| 7 | [vb pp] out over a [adj] period | 5 |
|
| 8 | phased [adv] over a [adj] period | 5 |
|
| 9 | [vb pp] [adv] over a long period | 5 |
|
| 10 | [vb pp] in over a [adj] period | 5 |
|
