SN4 ""

No	Pattern	Freq
1	[noun pl] it have	778
2	[noun pl] it has	513
3	[noun pl] it had	184
4	years it have	147
5	[noun pl] it 's	81
6	times it have	25
7	months it have	23
8	days it have	17
9	cases it have	13
10	ways it have	10
11	reasons it have	9
12	problems it have	9
13	things it have	8
14	areas it have	8
15	others it have	7
16	centuries it have	6
17	systems it have	5
18	studies it have	5
19	advantages it have	5
20	schools it have	5
21	miles it have	5