SN4 ""

No	Pattern	Freq
1	[verb] been a important [noun]	67
2	have been a important [noun]	67
3	[vb -s] been a important [noun]	42
4	has been a important [noun]	41
5	[adv] been a important [noun]	20
6	[adv] been a important [noun]	18
7	[vb past] been a important [noun]	11
8	had been a important [noun]	10
9	always been a important [noun]	6
10	have been a important [noun]	6
11	always been a important [noun]	6
12	[vb infin] been a important [noun]	6
13	been a [adv] important [noun]	12
14	been a [adv] important [noun]	12
15	been a important [adj] [noun]	10
16	been a important [adj] [noun]	10
17	been a important [noun] [prep]	72
18	been a important [noun] [prep]	72
19	been a important [noun] of	36
20	been a important [noun] of	36
21	been a important [noun] in	23
22	been a important [noun] in	23
23	been a important [noun] for	9
24	been a important [noun] for	9