| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] thirty years | 225 |
|
| 2 | [prep] thirty years | 225 |
|
| 3 | [adv] thirty years | 210 |
|
| 4 | [adv] thirty years | 201 |
|
| 5 | [adj] thirty years | 197 |
|
| 6 | [conj] thirty years | 116 |
|
| 7 | [num ord] thirty years | 103 |
|
| 8 | for thirty years | 102 |
|
| 9 | for thirty years | 102 |
|
| 10 | last thirty years | 71 |
|
| 11 | last thirty years | 71 |
|
| 12 | over thirty years | 70 |
|
| 13 | over thirty years | 69 |
|
| 14 | [art] thirty years | 62 |
|
| 15 | the thirty years | 62 |
|
| 16 | the thirty years | 62 |
|
| 17 | [art] thirty years | 62 |
|
| 18 | [subord] thirty years | 60 |
|
| 19 | [verb] thirty years | 56 |
|
| 20 | than thirty years | 55 |
|
| 21 | than thirty years | 55 |
|
| 22 | [coord] thirty years | 52 |
|
| 23 | [noun] thirty years | 51 |
|
| 24 | [adj] thirty years | 44 |
|
| 25 | nearly thirty years | 44 |
|
| 26 | nearly thirty years | 44 |
|
| 27 | [det] thirty years | 42 |
|
| 28 | [noun sg] thirty years | 38 |
|
| 29 | be thirty years | 37 |
|
| 30 | [be] thirty years | 37 |
|
