| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a long [noun] of [noun] | 644 |
|
| 2 | a long [noun sg] of [noun] | 600 |
|
| 3 | a [adj] period of [noun] | 579 |
|
| 4 | a [adj] period of [noun] | 535 |
|
| 5 | a long period of [noun] | 169 |
|
| 6 | [art] long period of [noun] | 162 |
|
| 7 | [art] long period of [noun] | 162 |
|
| 8 | a long period [prep] [noun] | 160 |
|
| 9 | a long period of [noun] | 151 |
|
| 10 | a long period of [noun] | 151 |
|
