| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] initial period [prep] [adj] years | 12 |
|
| 2 | a initial period [prep] [adj] years | 12 |
|
| 3 | an initial period [prep] [adj] years | 12 |
|
| 4 | [art] initial period [prep] [adj] years | 12 |
|
