| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [to-vb] be [prep] | 26 |
|
| 2 | is [vb pp] have be [prep] | 25 |
|
| 3 | is [vb pp] [verb] been [prep] | 25 |
|
| 4 | is [vb pp] to have be [prep] | 24 |
|
| 5 | is [vb pp] [verb] be in | 9 |
|
| 6 | is believed [verb] be [prep] | 7 |
|
| 7 | is said [verb] be [prep] | 7 |
|
| 8 | is [vb pp] [verb] be on | 5 |
|
| 9 | is known [verb] be [prep] | 5 |
|
