| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] is | 912 |
|
| 2 | is [vb pp] [is] | 697 |
|
| 3 | is [v-ing] [is] | 204 |
|
| 4 | is need [is] | 121 |
|
| 5 | is needed [is] | 121 |
|
| 6 | is require [is] | 87 |
|
| 7 | is required [is] | 87 |
|
| 8 | is do [is] | 52 |
|
| 9 | is say [is] | 52 |
|
| 10 | is doing [is] | 32 |
|
| 11 | is saying [is] | 30 |
|
| 12 | is happen [is] | 29 |
|
| 13 | is happening [is] | 29 |
|
| 14 | is leave [is] | 23 |
|
| 15 | is left [is] | 23 |
|
| 16 | is done [is] | 19 |
|
| 17 | is based [is] | 17 |
|
| 18 | is base [is] | 17 |
|
| 19 | is know [is] | 16 |
|
| 20 | is known [is] | 16 |
|
| 21 | is said [is] | 15 |
|
| 22 | is make [is] | 13 |
|
| 23 | is seek [is] | 13 |
|
| 24 | is use [is] | 11 |
|
| 25 | is involve [is] | 11 |
|
| 26 | is offer [is] | 11 |
|
| 27 | is involved [is] | 11 |
|
| 28 | is [to-vb] [is] | 11 |
|
| 29 | is used [is] | 11 |
|
| 30 | is propose [is] | 10 |
|
