| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [vb pp] [prep] | 9543 |
|
| 2 | be [vb pp] [adv prt] [prep] | 6729 |
|
| 3 | should be [vb pp] [adv prt] | 901 |
|
| 4 | should be [adv prt] [prep] | 118 |
|
