| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [conj] [adv] | 607 |
|
| 2 | is [vb pp] [conj] [vb past] | 460 |
|
| 3 | [vb pp] [conj] [adv] [vb past] | 399 |
|
| 4 | is [vb pp] [adv] [vb past] | 7 |
|
| 5 | is [conj] [adv] [vb past] | 6 |
|
