| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] be refer to [prep] | 14 |
|
| 2 | [vb mod] [adv] [be] refer to [prep] | 14 |
|
| 3 | [vb mod] [adv] [be] referred to [prep] | 14 |
|
| 4 | [vb mod] [adv] [be] refer to as | 12 |
|
| 5 | [vb mod] [adv] [be] refer to as | 12 |
|
| 6 | may [adv] [be] refer to [prep] | 5 |
|
