SN4 ""

No	Pattern	Freq
1	[verb] [adv] to ensure [that] [art]	16
2	[noun] [adv] to ensure [that] [art]	13
3	[conj] [adv] to ensure [that] [art]	11
4	[noun sg] [adv] to ensure [that] [art]	10
5	[coord] [adv] to ensure [that] [art]	10
6	[adv] [adv] to ensure [that] [art]	9
7	[adj] [adv] to ensure [that] [art]	6
8	[adj] [adv] to ensure [that] [art]	6
9	[adv] [adv] to ensure [that] [art]	6
10	but [adv] to ensure [that] [art]	5
11	[vb pp] [adv] to ensure [that] [art]	5
12	and [adv] to ensure [that] [art]	5
13	and [adv] to ensure [that] [art]	5
14	but [adv] to ensure [that] [art]	5
15	[adv] [verb] to ensure [that] [art]	42
16	[adv] [adj] to ensure [that] [art]	29
17	[adv] [adj] to ensure [that] [art]	28
18	[adv] [vb pp] to ensure [that] [art]	18
19	[adv] [conj] to ensure [that] [art]	8
20	[adv] important to ensure [that] [art]	8
21	[adv] important to ensure [that] [art]	8
22	[adv] as to ensure [that] [art]	7
23	[adv] as to ensure [that] [art]	7
24	[adv] [subord] to ensure [that] [art]	7
25	[adv] [vb infin] to ensure [that] [art]	6
26	[adv] [adv] to ensure [that] [art]	6
27	[adv] [adv] to ensure [that] [art]	6
28	[adv] be to ensure [that] [art]	5
29	[adv] need to ensure [that] [art]	5
30	[adv] [vb -s] to ensure [that] [art]	5