| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [vb pp] for this | 36 |
|
| 2 | are needed for this | 6 |
|
| 3 | are [v-ing] for this | 6 |
|
| 4 | are need for this | 6 |
|
| 5 | are use for this | 6 |
|
| 6 | are used for this | 6 |
|
