SN4 ""

No	Pattern	Freq
1	should [adv] have [verb]	1015
2	should [adv] have [verb]	1009
3	should [adv] have [vb pp]	901
4	should [not/n't] have [verb]	698
5	should not have [verb]	698
6	should n't have [verb]	474
7	should [adv] have [verb]	317
8	should not have [verb]	224
9	should never have [verb]	169
10	should never have [verb]	169
11	should [adv] have [to-vb]	110
12	should [adv] have do	81
13	should [adv] have done	77
14	should [adv] have said	67
15	should [adv] have say	67
16	should [adv] have come	52
17	should [adv] have come	52
18	should [adv] have have	37
19	should [adv] have had	37
20	should [adv] have let	34
21	should [adv] have let	34
22	should [adv] have go	31
23	should [adv] have take	29
24	should [adv] have happen	27
25	should [adv] have happened	27
26	should [adv] have gone	26
27	should [adv] have taken	25
28	should [adv] have leave	24
29	should [adv] have left	23
30	should [adv] have ask	22