No | Pattern | Freq | Relations |
---|---|---|---|
1 | is [adj] for [verb] [adv] | 59 | |
2 | be useful for [verb] [adv] | 10 | |
3 | [be] useful for [verb] [adv] | 10 | |
4 | is useful [prep] [verb] [adv] | 9 | |
5 | is useful [prep] [verb] [adv] | 9 | |
6 | [is] useful for [verb] [adv] | 6 | |
7 | is useful for [verb] [adv] | 6 |