SN4 ""

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