| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [modal v] [verb] [been] useful | 8 |
|
| 2 | [noun sg] [vb mod] [verb] [been] useful | 8 |
|
| 3 | [noun sg] would [verb] [been] useful | 5 |
|
| 4 | [noun sg] would [verb] [been] useful | 5 |
|
| 5 | [noun sg] [verb] [been] useful [prep] | 6 |
|
| 6 | [noun sg] [verb] [been] useful [prep] | 6 |
|
| 7 | [noun sg] [verb] [been] useful in | 5 |
|
| 8 | [noun sg] [verb] [been] useful in | 5 |
|
