| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] a long [noun] of | 38 |
|
| 2 | [conj] a [adj] period of | 37 |
|
| 3 | [conj] a long [noun sg] of | 35 |
|
| 4 | [conj] [art] long period of | 10 |
|
| 5 | [conj] [art] long period of | 10 |
|
| 6 | [conj] a long period [prep] | 7 |
|
| 7 | [conj] a long period of | 6 |
|
| 8 | [conj] a long period of | 6 |
|
