| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period of time | 316 |
|
| 2 | [prep] [art] long period of [noun] | 136 |
|
| 3 | [prep] [art] long [noun] of time | 106 |
|
| 4 | [prep] [art] long period of time | 103 |
|
| 5 | [prep] [art] long [noun sg] of time | 103 |
|
| 6 | [prep] [art] long period of time | 100 |
|
| 7 | [prep] [art] long period [prep] time | 100 |
|
| 8 | [prep] [art] long period [prep] time | 100 |
|
