No | Pattern | Freq | Relations |
---|---|---|---|
1 | a [adj] period [prep] [v-ing] | 21 | |
2 | a [adj] period [prep] [prep] | 19 | |
3 | [adj] period [prep] [v-ing] [prep] | 18 | |
4 | a [adj] period [v-ing] [prep] | 14 | |
5 | a period [prep] [v-ing] [prep] | 8 | |
6 | a [adj] [prep] [v-ing] [prep] | 5 |