SN4 ""

No	Pattern	Freq
1	to have been [verb] at the time	12
2	to have been [vb pp] at the time	11
3	to have been effected at the [noun]	5
4	have been effected at the time	5
5	to have been effected at the time	5
6	to have been effected [prep] the time	5
7	to have been effect at the time	5
8	[verb] been effected at the time	5
9	to have been effected [prep] the time	5
10	to have be effected at the time	5
11	[to-vb] been effected at the time	5
12	to have been effected at [art] time	5
13	to have [been] effected at the time	5
14	to have [be] effected at the time	5