SN4 ""

No	Pattern	Freq
1	[pron] have once	666
2	[pers pn] have once	401
3	[noun] have once	397
4	[noun sg] have once	178
5	[noun prp] have once	164
6	he have once	163
7	he have once	162
8	[Wh det] have once	141
9	[conj] have once	120
10	[Wh pn] have once	103
11	who have once	102
12	who have once	102
13	that have once	97
14	that have once	97
15	[that] have once	97
16	she have once	96
17	she have once	96
18	which have once	82
19	which have once	82
20	what have once	59
21	what have once	59
22	[noun pl] have once	50
23	it have once	50
24	it have once	50
25	they have once	39
26	i have once	37
27	i have once	37
28	they have once	34
29	[coord] have once	19
30	[verb] have once	16