SN4 ""

No	Pattern	Freq
1	[adj] source of [noun] for	222
2	[adj] source of [noun] for	204
3	[art] source of [noun] for	89
4	[art] source of [noun] for	89
5	a source of [noun] for	78
6	a source of [noun] for	78
7	important source of [noun] for	32
8	important source of [noun] for	32
9	major source of [noun] for	24
10	major source of [noun] for	24
11	the source of [noun] for	11
12	main source of [noun] for	11
13	main source of [noun] for	11
14	the source of [noun] for	11
15	useful source of [noun] for	9
16	useful source of [noun] for	9
17	valuable source of [noun] for	8
18	valuable source of [noun] for	8
19	principal source of [noun] for	7
20	[adj -est] source of [noun] for	7
21	principal source of [noun] for	7
22	good source of [noun] for	7
23	good source of [noun] for	7
24	new source of [noun] for	6
25	great source of [noun] for	6
26	new source of [noun] for	6
27	only source of [noun] for	5
28	only source of [noun] for	5
29	rich source of [noun] for	5
30	additional source of [noun] for	5