| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] is [vb pp] [prep] a | 129 |
|
| 2 | is [vb pp] [prep] a [noun pl] | 39 |
|
| 3 | [verb] [vb pp] [prep] a [noun pl] | 39 |
|
| 4 | [verb] is [vb pp] [prep] [noun pl] | 38 |
|
