| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [adv prt] [prep] a period | 19 |
|
| 2 | [be] [verb] [adv prt] [prep] a period | 19 |
|
| 3 | [noun] [verb] [adv prt] [prep] a period | 8 |
|
| 4 | [be] [verb] [adv prt] [prep] a period | 7 |
|
| 5 | be [verb] [adv prt] [prep] a period | 7 |
|
| 6 | [noun sg] [verb] [adv prt] [prep] a period | 5 |
|
| 7 | [verb] [adv prt] [prep] a [adj] period | 37 |
|
| 8 | [verb] [adv prt] [prep] a [adj] period | 31 |
|
| 9 | [verb] [adv prt] [prep] a long period | 10 |
|
| 10 | [verb] [adv prt] [prep] a long period | 8 |
|
| 11 | [verb] [adv prt] [prep] a [adj -er] period | 6 |
|
| 12 | [verb] [adv prt] [prep] a period [prep] | 34 |
|
| 13 | [verb] [adv prt] [prep] a period [prep] | 34 |
|
| 14 | [verb] [adv prt] [prep] a period of | 32 |
|
| 15 | [verb] [adv prt] [prep] a period of | 32 |
|
