SN4 ""

No	Pattern	Freq
1	[noun] come about	217
2	[noun sg] come about	153
3	[verb] come about	150
4	have come about	134
5	[pron] come about	102
6	[adv] come about	102
7	[pers pn] come about	90
8	[adj] come about	87
9	[adv] come about	77
10	it come about	76
11	it come about	76
12	[modal v] come about	74
13	[vb mod] come about	74
14	[det] come about	72
15	[vb -s] come about	55
16	[noun pl] come about	52
17	has come about	50
18	this come about	41
19	this come about	41
20	[vb infin] come about	35
21	[vb past] come about	33
22	had come about	31
23	have come about	30
24	only come about	27
25	only come about	27
26	[not/n't] come about	24
27	not come about	24
28	not come about	22
29	will come about	20
30	[conj] come about	19