| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] time | 337 |
|
| 2 | a [adj] period [prep] time | 319 |
|
| 3 | a prolonged period [prep] [noun] | 19 |
|
| 4 | a prolonged [noun sg] [prep] time | 11 |
|
| 5 | a prolonged [noun] [prep] time | 11 |
|
| 6 | a prolonged period [prep] time | 11 |
|
| 7 | a prolonged period [prep] time | 11 |
|
| 8 | a prolonged period [prep] time | 11 |
|
| 9 | [art] prolonged period [prep] time | 11 |
|
| 10 | [art] prolonged period [prep] time | 11 |
|
| 11 | a prolonged period [prep] time | 11 |
|
