SN4 ""

No	Pattern	Freq
1	[noun sg] has been	24730
2	[noun sg] had been	15516
3	[noun sg] have been	3959
4	[noun sg] 's been	584
5	work have been	517
6	[noun sg] having been	360
7	government have been	306
8	system have been	292
9	man have been	288
10	life have been	248
11	attention have been	222
12	decision have been	221
13	father have been	219
14	[noun sg] to have been	208
15	money have been	206
16	company have been	200
17	progress have been	200
18	policy have been	179
19	house have been	175
20	case have been	172
21	family have been	167
22	problem have been	165
23	mother have been	163
24	programme have been	159
25	information have been	157
26	approach have been	155
27	industry have been	153
28	area have been	152
29	party have been	148
30	year have been	146