| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] time required for [art] | 8 |
|
| 2 | the time required for [art] | 8 |
|
| 3 | [art] time required for [art] | 8 |
|
| 4 | the time required for [art] | 8 |
|
| 5 | time required for [art] [noun sg] | 13 |
|
| 6 | time required for [art] [noun] | 13 |
|
