SN4 ""

No	Pattern	Freq
1	have become [art] [adj]	1099
2	have become [art] [adj]	963
3	have become a [adj]	802
4	have become a [adj]	600
5	has become [art] [adj]	564
6	had become [art] [adj]	354
7	have become the [adj]	293
8	have become the [adj]	293
9	have become an [adj]	202
10	have become [art] [adj]	110
11	have become [art] [num ord]	77
12	have become [art] first	59
13	have become [art] first	59
14	have become [art] major	58
15	have become [art] major	58
16	have become [art] [adj -est]	41
17	have become [art] important	32
18	have become [art] important	32
19	have become [art] [adj]	31
20	to have become [art] [adj]	24
21	have become [art] regular	17
22	have become [art] regular	17
23	have become [art] big	15
24	have become [art] political	15
25	have become [art] political	15
26	have become [art] new	13
27	have become [art] popular	13
28	have become [art] new	13
29	have become [art] large	13
30	have become [art] [adj -er]	13