| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [verb] be provided | 8 |
|
| 2 | should [vb infin] be provided | 8 |
|
| 3 | should have be provided | 7 |
|
| 4 | should have be provided | 7 |
|
| 5 | should [verb] been provided | 7 |
|
