No | Pattern | Freq | Relations |
---|---|---|---|
1 | be [verb] [art] [adj] period [prep] | 11 | |
2 | be [verb] a [adj] period [prep] | 10 | |
3 | be [verb] [art] [adj] period [prep] | 9 | |
4 | be [verb] [art] [adj] period of | 8 | |
5 | be [verb] [art] [adj] period of | 8 | |
6 | be [vb pp] [art] [adj] period [prep] | 6 | |
7 | be [v-ing] [art] [adj] period [prep] | 5 |