| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a long [noun] in | 298 |
|
| 2 | a long period [prep] | 216 |
|
| 3 | a long period [prep] | 216 |
|
| 4 | a [adj] period in | 130 |
|
| 5 | a [adj] period in | 124 |
|
| 6 | [art] long period in | 10 |
|
| 7 | a long period in | 9 |
|
| 8 | a long period in | 7 |
|
