SN4 ""

No	Pattern	Freq
1	[noun] have become a	748
2	[noun sg] have become a	478
3	[pron] have become a	406
4	[pers pn] have become a	308
5	[noun prp] have become a	171
6	it have become a	145
7	it have become a	145
8	[noun pl] have become a	92
9	he have become a	70
10	he have become a	69
11	[Wh det] have become a	61
12	[conj] have become a	61
13	which have become a	45
14	which have become a	45
15	[coord] have become a	41
16	[adj] have become a	38
17	[vb mod] have become a	36
18	she have become a	36
19	[modal v] have become a	36
20	she have become a	36
21	and have become a	32
22	and have become a	32
23	[verb] have become a	32
24	[Wh pn] have become a	24
25	who have become a	24
26	who have become a	24
27	i have become a	22
28	[adv] have become a	22
29	i have become a	22
30	[that] have become a	19