| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] [prep] a [adj] [noun] | 591 |
|
| 2 | [adv] [verb] [prep] a [adj] system | 24 |
|
| 3 | [adv] [v-ing] [prep] [art] [adj] system | 11 |
|
| 4 | [adv] [v-ing] [prep] [art] [adj] system | 11 |
|
| 5 | [adv] [v-ing] [prep] a [adj] system | 6 |
|
| 6 | [adv] [v-ing] [prep] a [adj] system | 5 |
|
