SN4 ""

No	Pattern	Freq
1	[noun sg] there have been	518
2	[noun sg] [ex0] has been	198
3	[noun sg] [ex0] had been	178
4	[noun sg] [ex0] have been	109
5	time [ex0] have been	49
6	year [ex0] have been	26
7	[noun sg] [ex0] 's been	24
8	century [ex0] have been	20
9	course [ex0] have been	13
10	date [ex0] have been	11
11	war [ex0] have been	10
12	period [ex0] have been	10
13	fact [ex0] have been	10
14	past [ex0] have been	10
15	decade [ex0] have been	9
16	addition [ex0] have been	8
17	case [ex0] have been	7
18	[noun sg] [ex0] 'd been	7
19	day [ex0] have been	6
20	month [ex0] have been	5
21	result [ex0] have been	5
22	reason [ex0] have been	5
23	life [ex0] have been	5
24	week [ex0] have been	5