SN4 ""

No	Pattern	Freq
1	have [vb pp] so	3120
2	had [verb] so	1026
3	have do so	725
4	have done so	682
5	have [verb] so	637
6	has [verb] so	483
7	have [verb] so	435
8	've [verb] so	323
9	have become so	253
10	have become so	251
11	have get so	185
12	have got so	184
13	have [to-vb] so	164
14	having [verb] so	123
15	have have so	89
16	have think so	87
17	have thought so	85
18	to have [verb] so	84
19	have had so	84
20	's [verb] so	83
21	have see so	83
22	have seen so	82
23	'd [verb] so	77
24	have go so	76
25	have say so	75
26	have said so	68
27	have work so	66
28	have gone so	65
29	have worked so	57
30	have spend so	52