| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] months [prep] a time | 19 |
|
| 2 | [prep] months [prep] a time | 16 |
|
| 3 | for months [prep] a time | 16 |
|
| 4 | [prep] months [prep] a time | 16 |
|
| 5 | for months [prep] a time | 16 |
|
| 6 | [num] months [prep] a time | 12 |
|
| 7 | [det] months [prep] a time | 7 |
|
| 8 | six months [prep] a time | 7 |
|
| 9 | six months [prep] a time | 7 |
|
| 10 | months [prep] a time [prep] | 7 |
|
| 11 | months [prep] a time [prep] | 7 |
|
