No | Pattern | Freq | Relations |
---|---|---|---|
1 | is [adj] for [v-ing] | 614 | |
2 | be essential for [v-ing] | 39 | |
3 | [be] essential for [v-ing] | 39 | |
4 | is essential [prep] [v-ing] | 39 | |
5 | is essential [prep] [v-ing] | 39 | |
6 | [is] essential for [v-ing] | 20 | |
7 | is essential for [verb] | 20 | |
8 | is essential for [v-ing] | 20 |