| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] long period [prep] | 243 |
|
| 2 | a long period [prep] | 216 |
|
| 3 | a long period [prep] | 216 |
|
| 4 | [art] long period of | 207 |
|
| 5 | the long period [prep] | 27 |
|
| 6 | the long period [prep] | 27 |
|
| 7 | [art] long period in | 9 |
|
| 8 | [art] long period during | 6 |
|
