| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [conj] [art] [noun sg] | 169 |
|
| 2 | it [is] essential [conj] [art] | 115 |
|
| 3 | [is] essential [conj] [art] [noun sg] | 81 |
|
| 4 | it [is] essential [conj] [noun sg] | 15 |
|
