| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | thirty years ' [noun] | 25 |
|
| 2 | thirty years ['s] [noun] | 25 |
|
| 3 | thirty years ['s] [noun sg] | 25 |
|
| 4 | thirty years ['s] war | 14 |
|
| 5 | 14 |
|
|
| 6 | thirty years ['s] experience | 5 |
|
| 7 | thirty years ['s] experience | 5 |
|
