| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system is [adv] [verb] in section | 30 |
|
| 2 | system is [adv] [vb pp] [prep] section | 30 |
|
| 3 | system is [adv] describe [prep] section | 30 |
|
| 4 | system is [adv] described [prep] section | 30 |
|
| 5 | system is fully [verb] [prep] section | 29 |
|
