SN4 ""

No	Pattern	Freq
1	[conj] it is impossible [verb] [det]	12
2	[that] it is impossible [verb] [det]	7
3	that it is impossible [verb] [det]	7
4	that it is impossible [verb] [det]	7
5	[noun] it is impossible [verb] [det]	6
6	[noun sg] it is impossible [verb] [det]	5
7	it is [adv] impossible [verb] [det]	15
8	it is [adv] impossible [verb] [det]	15
9	it is impossible [verb] [adv] [det]	16
10	it is impossible [verb] [Wh adv] [det]	13
11	it is impossible [verb] [prep] [det]	13
12	it is impossible [verb] [prep] [det]	13
13	it is impossible [verb] how [det]	11
14	it is impossible [verb] how [det]	11
15	it is impossible [verb] [conj] [det]	7
16	it is impossible [verb] [subord] [det]	6
17	it is impossible [verb] with [det]	5
18	it is impossible [verb] whether [det]	5
19	it is impossible [verb] with [det]	5
20	it is impossible [verb] whether [det]	5
21	it is impossible [verb] [det] [noun]	23
22	it is impossible [verb] [det] [adj]	19
23	it is impossible [verb] [det] [noun sg]	16
24	it is impossible [verb] [det] [adj]	16
25	it is impossible [verb] [det] [art]	10
26	it is impossible [verb] [det] [art]	10
27	it is impossible [verb] [det] the	7
28	it is impossible [verb] [det] the	7
29	it is impossible [verb] [det] [noun pl]	6