SN4 ""

No	Pattern	Freq
1	[noun] is [vb pp] to be [vb pp]	362
2	[noun sg] is [vb pp] to be [vb pp]	299
3	[pron] is [vb pp] to be [vb pp]	132
4	[pers pn] is [vb pp] to be [vb pp]	68
5	[Wh det] is [vb pp] to be [vb pp]	56
6	it is [vb pp] to be [vb pp]	53
7	it is [vb pp] to be [vb pp]	53
8	which is [vb pp] to be [vb pp]	50
9	which is [vb pp] to be [vb pp]	50
10	[conj] is [vb pp] to be [vb pp]	40
11	[coord] is [vb pp] to be [vb pp]	33
12	and is [vb pp] to be [vb pp]	29
13	and is [vb pp] to be [vb pp]	29
14	[noun prp] is [vb pp] to be [vb pp]	28
15	[noun pl] is [vb pp] to be [vb pp]	27
16	[adj] is [vb pp] to be [vb pp]	16
17	[det] is [vb pp] to be [vb pp]	13
18	he is [vb pp] to be [vb pp]	9
19	he is [vb pp] to be [vb pp]	9
20	this is [vb pp] to be [vb pp]	8
21	this is [vb pp] to be [vb pp]	8
22	[n mass] is [vb pp] to be [vb pp]	7
23	[verb] is [vb pp] to be [vb pp]	7
24	system is [vb pp] to be [vb pp]	7
25	that is [vb pp] to be [vb pp]	6
26	system is [vb pp] to be [vb pp]	6
27	[that] is [vb pp] to be [vb pp]	6
28	she is [vb pp] to be [vb pp]	6
29	what is [vb pp] to be [vb pp]	6
30	she is [vb pp] to be [vb pp]	6