SN4 ""

No	Pattern	Freq
1	groups of [noun pl] [prep]	173
2	groups [prep] [noun pl] in	53
3	groups [prep] [noun pl] of	33
4	groups [prep] [noun pl] with	28
5	groups [prep] [noun pl] on	23
6	groups [prep] patients [prep]	17
7	groups [prep] [noun pl] at	11
8	groups [prep] [noun pl] for	11
9	groups in [noun pl] [prep]	9
10	groups [prep] [noun pl] to	8
11	groups [prep] [noun pl] from	8
12	groups [prep] children [prep]	8
13	groups [prep] pupils [prep]	7
14	groups with [noun pl] [prep]	7
15	groups [prep] members [prep]	7
16	groups like [noun pl] [prep]	6
17	groups [prep] [noun pl] within	6
18	groups [prep] men [prep]	6
19	groups [prep] friends [prep]	5
20	groups [prep] employees [prep]	5
21	groups [prep] terms [prep]	5
22	groups [prep] teachers [prep]	5