| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | either by [verb] [pron] [prep] [art] | 7 |
|
| 2 | either by [verb] [pers pn] [prep] [art] | 7 |
|
| 3 | either by [v-ing] [pron] [prep] [art] | 7 |
|
| 4 | either by [verb] [pron] [prep] a | 5 |
|
