| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] [prep] a [adj] | 695 |
|
| 2 | [adv] [prep] a [adj] system | 46 |
|
| 3 | [v-ing] [prep] a [adj] system | 37 |
|
| 4 | [adv] [v-ing] [prep] a system | 5 |
|
