SN4 ""

No	Pattern	Freq
1	it 's [adv] difficult [to-vb]	194
2	it 's very difficult [verb]	118
3	it 's [adv] difficult get	26
4	it 's [adv] difficult to get	24
5	it 's so difficult [verb]	11
6	it 's quite difficult [verb]	10
7	it 's [adv] difficult to find	9
8	it 's [adv] difficult to say	9
9	it 's [adv] difficult find	9
10	it 's extremely difficult [verb]	9
11	it 's [adv] difficult say	9
12	it 's [adv] difficult to see	8
13	it 's [adv] difficult see	8
14	it 's more difficult [verb]	8
15	it 's [adv] difficult to do	7
16	it 's [adv] difficult do	7
17	it 's [adv] difficult tell	7
18	it 's [adv] difficult keep	7
19	it 's [adv] difficult to keep	7
20	it 's always difficult [verb]	7
21	it 's [adv] difficult to tell	7
22	it 's [adv] difficult put	6
23	it 's [adv] difficult to know	6
24	it 's [adv] difficult know	6
25	it 's [adv] difficult to put	6