| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it is essential [prep] | 24 |
|
| 2 | [noun] it is essential [prep] | 13 |
|
| 3 | [that] it is essential [prep] | 10 |
|
| 4 | that it is essential [prep] | 10 |
|
| 5 | that it is essential [prep] | 10 |
|
| 6 | [noun sg] it is essential [prep] | 9 |
|
| 7 | [subord] it is essential [prep] | 8 |
|
| 8 | [coord] it is essential [prep] | 6 |
|
| 9 | it is [adv] essential [prep] | 35 |
|
| 10 | it is [adv] essential [prep] | 23 |
|
| 11 | it is [not/n't] essential [prep] | 12 |
|
| 12 | it is not essential [prep] | 12 |
|
| 13 | it is not essential [prep] | 12 |
|
| 14 | it is also essential [prep] | 5 |
|
| 15 | it is also essential [prep] | 5 |
|
| 16 | it is essential [verb] [prep] | 28 |
|
| 17 | it is essential [to-vb] [prep] | 28 |
|
| 18 | it is essential [prep] [art] | 47 |
|
| 19 | it is essential [prep] [art] | 47 |
|
| 20 | it is essential [prep] the | 37 |
|
| 21 | it is essential [prep] the | 37 |
|
| 22 | it is essential [prep] [adj] | 20 |
|
| 23 | it is essential [prep] [noun] | 16 |
|
| 24 | it is essential [prep] [adj] | 10 |
|
| 25 | it is essential [prep] [det] | 10 |
|
| 26 | it is essential [prep] a | 10 |
|
| 27 | it is essential [prep] [noun sg] | 9 |
|
| 28 | it is essential [prep] [be] | 8 |
|
| 29 | it is essential [prep] be | 8 |
|
| 30 | it is essential [prep] be | 8 |
|
