SN4 ""

No	Pattern	Freq
1	have not [vb pp] to	614
2	have not [verb] to	332
3	had not [verb] to	319
4	have n't [verb] to	289
5	have not [verb] to	155
6	has not [verb] to	126
7	have not speak to	81
8	have not spoken to	78
9	have not occurred to	70
10	have not occur to	70
11	have not come to	67
12	have not come to	66
13	have not got to	36
14	have not get to	36
15	have not gone to	31
16	have not go to	31
17	have not led to	20
18	have not lead to	20
19	have not talk to	17
20	have not talked to	17
21	have not listen to	16
22	have not return to	15
23	have not listened to	15
24	have not returned to	15
25	have not expect to	14
26	have not write to	14
27	have not expected to	14
28	have not happened to	13
29	have not happen to	13
30	have not written to	13