| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period of | 907 |
|
| 2 | [prep] [art] long [noun] of | 841 |
|
| 3 | [prep] [art] long [noun sg] of | 711 |
|
| 4 | [prep] [art] long period [prep] | 198 |
|
| 5 | [prep] [art] long period [prep] | 198 |
|
| 6 | [prep] [art] long period of | 174 |
|
| 7 | [prep] [art] long period of | 168 |
|
