| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [noun sg] is [vb pp] | 1252 |
|
| 2 | research [noun sg] is [vb pp] | 38 |
|
| 3 | research [coord] [noun sg] is | 17 |
|
| 4 | research [coord] [noun sg] [vb pp] | 6 |
|
