SN4 ""

No	Pattern	Freq
1	[verb] an important role in the	86
2	play an important role in the	71
3	[vb past] an important role in the	21
4	played an important role in the	18
5	[to-vb] an important role in the	16
6	[vb -s] an important role in the	16
7	[vb base] an important role in the	14
8	plays an important role in the	13
9	play an important role in the	13
10	have an important role in the	11
11	to play an important role in the	10
12	played an important role in the	7
13	[vb infin] an important role in the	7
14	[vb pp] an important role in the	7
15	such an important role in the	6
16	[adj] an important role in the	6
17	such an important role in the	6
18	[det] an important role in the	6
19	to have an important role in the	5
20	play an important role in the	5
21	[v-ing] an important role in the	5
22	playing an important role in the	5
23	an [adv] important role in the	6
24	an [adv] important role in the	6
25	an important [adj] role in the	6
26	an important [adj] role in the	6
27	an important role play in the	11
28	an important role to play in the	11
29	an important role [to-vb] in the	11
30	an important role [verb] in the	11