| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | over [art] next [adj] months | 262 |
|
| 2 | over [art] [adj] eighteen months | 22 |
|
| 3 | [prep] [art] next eighteen months | 16 |
|
| 4 | over [art] next eighteen [noun pl] | 6 |
|
| 5 | over [art] next eighteen [noun] | 6 |
|
| 6 | over [art] next eighteen month | 5 |
|
| 7 | over [art] next eighteen months | 5 |
|
