| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv prt] a long period | 28 |
|
| 2 | [vb -s] [adv prt] a long [noun] | 27 |
|
| 3 | [vb -s] [adv prt] a long [noun sg] | 27 |
|
| 4 | [vb -s] [adv prt] a [adj] period | 15 |
|
| 5 | [vb -s] [adv prt] a [adj] period | 15 |
|
| 6 | [vb -s] [adv prt] a long period | 7 |
|
| 7 | [vb -s] [adv prt] a long period | 7 |
|
| 8 | [vb -s] [adv] a long period | 7 |
|
| 9 | [vb -s] [adv prt] [art] long period | 7 |
|
| 10 | [vb -s] [adv prt] [art] long period | 7 |
|
| 11 | [vb -s] [adv prt] a long period | 7 |
|
