SN4 ""

No	Pattern	Freq
1	[noun] have been [vb pp] to ensure	32
2	[noun sg] have been [vb pp] to ensure	18
3	[noun pl] have been [vb pp] to ensure	13
4	care have been [vb pp] to ensure	7
5	care have been [vb pp] to ensure	7
6	have been [vb pp] [adv] to ensure	8
7	have been [vb pp] [adv prt] to ensure	7
8	have been [vb pp] to ensure [conj]	22
9	have been [vb pp] to ensure that	22
10	have been [vb pp] to ensure [that]	22
11	have been [vb pp] to ensure that	22
12	have been [vb pp] to ensure [pron]	5
13	have been [vb pp] to ensure [art]	5
14	have been [vb pp] to ensure [adj]	5
15	have been [vb pp] to ensure [art]	5