| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] the last 30 | 81 |
|
| 2 | [prep] the last 30 | 81 |
|
| 3 | over the last 30 | 35 |
|
| 4 | over the last 30 | 35 |
|
| 5 | in the last 30 | 19 |
|
| 6 | in the last 30 | 19 |
|
| 7 | for the last 30 | 10 |
|
| 8 | during the last 30 | 10 |
|
| 9 | during the last 30 | 10 |
|
| 10 | for the last 30 | 10 |
|
| 11 | of the last 30 | 5 |
|
| 12 | of the last 30 | 5 |
|
| 13 | the last 30 [noun] | 82 |
|
| 14 | the last 30 [noun pl] | 81 |
|
| 15 | the last 30 years | 76 |
|
| 16 | the last 30 year | 76 |
|
| 17 | the last 30 [conj] | 5 |
|
