SN4 ""

No	Pattern	Freq
1	have played [art] [adj] role	178
2	have played a [adj] role	122
3	has played [art] [adj] role	73
4	have played an [adj] role	43
5	had played [art] [adj] role	42
6	have played [art] [adj] role	40
7	have played [art] important role	38
8	have played [art] major role	28
9	have played [art] key role	24
10	have played [art] leading role	17
11	have played [art] significant role	13
12	to have played [art] [adj] role	11
13	have played [art] crucial role	11
14	have played the [adj] role	10
15	have played [art] central role	9
16	have played [art] [adj] role	6