SN4 ""

No	Pattern	Freq
1	[adj] [conj] it is [adv] and	8
2	[noun] [conj] it is [adv] and	6
3	[adj] [conj] it is [adv] and	6
4	[noun sg] [conj] it is [adv] and	5
5	[verb] [conj] it is [adv] and	5
6	[conj] it is [verb] [adv] and	19
7	[conj] it is [vb pp] [adv] and	10
8	[conj] it is [v-ing] [adv] and	8
9	[conj] it is [adv] [adv] and	5
10	[conj] it is [adv] [adj] and	139
11	[conj] it is [adv] [adj] and	131
12	[conj] it is [adv] [verb] and	38
13	[conj] it is [adv] [vb pp] and	34
14	[conj] it is [adv] [adv] and	9
15	[conj] it is [adv] [adj -er] and	7
16	[conj] it is [adv] difficult and	5
17	[conj] it is [adv] difficult and	5
18	[conj] it is [adv] [adv prt] and	5
19	[conj] it is [adv] [noun] and	5
20	[conj] it is [adv] and [adv]	13
21	[conj] it is [adv] and [adv]	12
22	[conj] it is [adv] and [adj]	8
23	[conj] it is [adv] and [adj]	7
24	[conj] it is [adv] and [conj]	5