| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] it [is] necessary | 117 |
|
| 2 | [adv] [pers pn] is necessary | 110 |
|
| 3 | [adv] [pers pn] [is] necessary | 84 |
|
| 4 | [Wh adv] [pers pn] [is] necessary | 30 |
|
| 5 | why [pers pn] [is] necessary | 18 |
|
| 6 | why [pers pn] [is] necessary | 18 |
|
| 7 | then [pers pn] [is] necessary | 11 |
|
| 8 | sometimes [pers pn] [is] necessary | 11 |
|
| 9 | sometimes [pers pn] [is] necessary | 11 |
|
| 10 | then [pers pn] [is] necessary | 11 |
|
| 11 | so [pers pn] [is] necessary | 10 |
|
| 12 | so [pers pn] [is] necessary | 10 |
|
| 13 | [adv] [pers pn] 's necessary | 7 |
|
| 14 | often [pers pn] [is] necessary | 6 |
|
| 15 | often [pers pn] [is] necessary | 6 |
|
| 16 | here [pers pn] [is] necessary | 6 |
|
| 17 | here [pers pn] [is] necessary | 6 |
|
| 18 | where [pers pn] [is] necessary | 5 |
|
| 19 | where [pers pn] [is] necessary | 5 |
|
