| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] a [noun] of time | 25 |
|
| 2 | [det] a [noun sg] of time | 25 |
|
| 3 | [det] a period of [noun sg] | 9 |
|
| 4 | [det] a period of [noun] | 9 |
|
| 5 | [det] a period of time | 5 |
|
| 6 | [det] a period [prep] time | 5 |
|
| 7 | [det] [art] period of time | 5 |
|
| 8 | [det] a period of time | 5 |
|
| 9 | [det] a period of time | 5 |
|
| 10 | [det] a period [prep] time | 5 |
|
| 11 | [det] [art] period of time | 5 |
|
| 12 | [det] a period of time | 5 |
|
| 13 | [adj] a period of time | 5 |
|
