| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | period of [adv] [adj] | 148 |
|
| 2 | period [prep] [adv] [num] | 114 |
|
| 3 | period [prep] about [adj] | 56 |
|
| 4 | period [prep] [adv] [adj] | 47 |
|
| 5 | period [prep] approximately [adj] | 12 |
|
| 6 | period [prep] around [adj] | 10 |
|
| 7 | period [prep] very [adj] | 10 |
|
| 8 | period [prep] [adv] rapid | 9 |
|
| 9 | period [prep] [adv] rapid | 9 |
|
| 10 | period [prep] [adv] two | 8 |
|
| 11 | period [prep] [adv] three | 8 |
|
| 12 | period [prep] [adv] two | 8 |
|
| 13 | period [prep] [adv] three | 8 |
|
| 14 | period [prep] only [adj] | 8 |
|
| 15 | period [prep] over [adj] | 7 |
|
| 16 | period [prep] [adv] four | 7 |
|
| 17 | period [prep] [adv] four | 7 |
|
| 18 | period [prep] [adv] one | 7 |
|
| 19 | period [prep] [adv] one | 7 |
|
| 20 | period [prep] [adv] five | 6 |
|
| 21 | period [prep] [adv] five | 6 |
|
| 22 | period [prep] nearly [adj] | 6 |
|
| 23 | period [prep] [adv] twenty | 6 |
|
| 24 | period [prep] [adv] twenty | 6 |
|
| 25 | period [prep] [adv] [det] | 5 |
|
| 26 | period [prep] more [adj] | 5 |
|
| 27 | period [prep] exceptionally [adj] | 5 |
|
| 28 | period [prep] relatively [adj] | 5 |
|
| 29 | period from [adv] [adj] | 5 |
|
