| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [adv] [prep] a [noun] | 456 |
|
| 2 | is [verb] [adv] [prep] a [noun sg] | 417 |
|
| 3 | be [verb] [adv] [prep] a period | 30 |
|
| 4 | [be] [verb] [adv] [prep] a period | 30 |
|
| 5 | is [verb] [adv] [prep] [art] period | 8 |
|
| 6 | is [verb] [adv] [prep] [art] period | 8 |
|
| 7 | [is] [verb] [adv] [prep] a period | 5 |
|
| 8 | is [verb] [adv] [prep] a period | 5 |
|
| 9 | is [verb] [adv] [prep] a period | 5 |
|
