No | Pattern | Freq | Relations |
---|---|---|---|
1 | [be] [prep] [num] years ' duration | 49 | |
2 | be [prep] [num] years ' duration | 49 | |
3 | [be] [prep] [num] years ' duration | 49 | |
4 | [be] of [num] years ' duration | 48 | |
5 | [is] [prep] [num] years ' duration | 45 | |
6 | is [prep] [num] years ' duration | 45 | |
7 | [be] [prep] three years ' duration | 24 | |
8 | [be] [prep] four years ' duration | 18 | |
9 | [be] [prep] two years ' duration | 7 |