No | Pattern | Freq | Relations |
---|---|---|---|
1 | [noun] is useful for [verb] [art] | 7 | |
2 | [noun sg] is useful for [verb] [art] | 6 | |
3 | is [adv] useful for [verb] [art] | 5 | |
4 | is [adv] useful for [verb] [art] | 5 | |
5 | is useful for [verb] [art] [noun] | 10 | |
6 | is useful for [verb] [art] [noun sg] | 8 |