SN4 ""

No	Pattern	Freq
1	have been [verb] [prep] recent [noun pl]	134
2	have been [vb pp] [prep] recent [noun]	127
3	have been [verb] in recent [noun]	123
4	have been [verb] [prep] recent years	88
5	have been [verb] [prep] recent year	88
6	has been [verb] [prep] recent [noun]	77
7	have been [verb] [prep] recent [noun]	52
8	have been [v-ing] [prep] recent [noun]	17
9	have been [verb] [prep] recent months	14
10	have been [verb] [prep] recent month	14
11	had been [verb] [prep] recent [noun]	12
12	have been [verb] [prep] recent [noun sg]	10
13	have been [verb] by recent [noun]	9
14	have been [verb] [prep] recent weeks	8
15	have been [verb] [prep] recent week	8
16	have been [verb] over recent [noun]	7
17	have been made [prep] recent [noun]	7
18	have been make [prep] recent [noun]	7
19	have been [verb] [prep] recent times	6
20	have been [verb] [prep] recent time	6
21	have been developed [prep] recent [noun]	5
22	have been develop [prep] recent [noun]	5