SN4 ""

No	Pattern	Freq
1	[verb] [to-vb] at least	294
2	[vb pp] [to-vb] at [adv]	109
3	[vb base] [to-vb] at [adv]	80
4	have [to-vb] at [adv]	80
5	[vb infin] [to-vb] at [adv]	70
6	[vb past] [to-vb] at [adv]	62
7	[vb -s] [to-vb] at [adv]	45
8	expect [to-vb] at [adv]	39
9	[verb] to have at [adv]	38
10	need [to-vb] at [adv]	36
11	have [to-vb] at [adv]	31
12	[verb] [to-vb] at once	30
13	[v-ing] [to-vb] at [adv]	27
14	expected [to-vb] at [adv]	26
15	[verb] to look at [adv]	22
16	seem [to-vb] at [adv]	20
17	had [to-vb] at [adv]	18
18	have [to-vb] at [adv]	17
19	need [to-vb] at [adv]	15
20	try [to-vb] at [adv]	14
21	want [to-vb] at [adv]	13
22	[verb] to spend at [adv]	13
23	need [to-vb] at [adv]	12
24	require [to-vb] at [adv]	11
25	[verb] [to-vb] at about	11
26	aim [to-vb] at [adv]	10
27	[verb] to take at [adv]	10
28	manage [to-vb] at [adv]	10
29	[verb] to wait at [adv]	10
30	[verb] to raise at [adv]	9