| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv prt] [det] than a decade | 6 |
|
| 2 | [verb] [adv prt] [det] than [art] decade | 6 |
|
| 3 | [verb] [adv prt] [det] than [art] decade | 6 |
|
| 4 | [verb] [adv prt] more than [art] decade | 6 |
|
| 5 | [verb] [adv prt] [det] than a decade | 6 |
|
