SN4 ""

No	Pattern	Freq
1	other groups	480
2	small groups	392
3	different groups	370
4	social groups	334
5	ethnic groups	225
6	environmental groups	190
7	local groups	143
8	working groups	130
9	various groups	127
10	socio-economic groups	116
11	certain groups	106
12	voluntary groups	99
13	particular groups	97
14	large groups	92
15	political groups	90
16	occupational groups	84
17	main groups	71
18	religious groups	64
19	professional groups	61
20	conservation groups	55
21	self-help groups	48
22	major groups	46
23	specific groups	46
24	separate groups	43
25	distinct groups	42
26	rival groups	42
27	paramilitary groups	41
28	new groups	40
29	vulnerable groups	37
30	functional groups	36