SN4 ""

No	Pattern	Freq
1	[modal v] have become [art]	60
2	[vb mod] have become [art]	60
3	[adv] have become [art]	20
4	[adv] have become [art]	13
5	might have become [art]	13
6	might have become [art]	13
7	would have become [art]	10
8	would have become [art]	10
9	may have become [art]	9
10	should have become [art]	9
11	will have become [art]	9
12	should have become [art]	9
13	may have become [art]	9
14	will have become [art]	8
15	could have become [art]	7
16	not have become [art]	7
17	[not/n't] have become [art]	7
18	not have become [art]	7
19	could have become [art]	7
20	have become [art] [noun]	43
21	have become [art] [noun sg]	41
22	have become [art] [adj]	31
23	have become [art] [adj]	23
24	have become [art] [adv]	7
25	have become [art] [adv]	7
26	have become [art] [num ord]	5