| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is used [prep] [verb] [adj] [noun pl] | 6 |
|
| 2 | [is] used [prep] [v-ing] [adj] [noun pl] | 6 |
|
| 3 | [is] used [prep] [verb] [adj] [noun pl] | 5 |
|
