| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [adv] a [noun sg] | 37 |
|
| 2 | be [vb pp] [adv] a [noun] | 36 |
|
| 3 | be [vb pp] once a [noun] | 14 |
|
| 4 | be [vb pp] [adv] a year | 8 |
|
| 5 | be [vb pp] [adv] a year | 8 |
|
| 6 | be [vb pp] twice a [noun] | 7 |
|
| 7 | be [vb pp] [adv] a day | 6 |
|
| 8 | be [vb pp] [adv] a week | 6 |
|
| 9 | be [vb pp] [adv] a week | 6 |
|
| 10 | be [vb pp] [adv] a day | 6 |
|
