| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [adv prt] over a period | 11 |
|
| 2 | [be] [verb] [adv prt] over a period | 11 |
|
| 3 | be [verb] [adv prt] over a period | 6 |
|
| 4 | [be] [verb] [adv prt] over a period | 6 |
|
| 5 | [verb] [adv prt] over a [adj] period | 14 |
|
| 6 | [verb] [adv prt] over a [adj] period | 14 |
|
| 7 | [verb] [adv prt] over a period [prep] | 19 |
|
| 8 | [verb] [adv prt] over a period of | 19 |
|
| 9 | [verb] [adv prt] over a period of | 19 |
|
| 10 | [verb] [adv prt] over a period [prep] | 19 |
|
