| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [adv prt] at [art] early stage | 8 |
|
| 2 | [vb pp] [adv prt] at an early [noun sg] | 7 |
|
| 3 | [vb pp] [adv prt] at [art] early [noun sg] | 7 |
|
