| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [prep] a long [noun] | 963 |
|
| 2 | [noun sg] [prep] a long [noun sg] | 951 |
|
| 3 | [noun sg] [prep] a [adj] period | 519 |
|
| 4 | [noun sg] [prep] a [adj] period | 476 |
|
| 5 | [noun] [prep] a long period | 137 |
|
| 6 | [noun sg] [prep] a long period | 129 |
|
| 7 | [noun sg] [prep] [art] long period | 104 |
|
| 8 | [noun sg] [prep] [art] long period | 104 |
|
| 9 | [noun sg] [prep] a long period | 102 |
|
| 10 | [noun sg] [prep] a long period | 102 |
|
