| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a long [noun sg] [prep] | 2947 |
|
| 2 | a long period [prep] | 245 |
|
| 3 | a [noun sg] period [prep] | 96 |
|
| 4 | a long [noun sg] period | 27 |
|
| 5 | long [noun sg] period [prep] | 11 |
|
