| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [art] most useful | 6 |
|
| 2 | to be [art] most useful | 6 |
|
| 3 | [prep] be [art] most useful | 6 |
|
| 4 | [prep] be [art] most useful | 6 |
|
| 5 | be [art] most useful [noun] | 9 |
|
| 6 | be [art] most useful [noun sg] | 7 |
|
