SN4 ""

No	Pattern	Freq
1	[adv] difficult [pers pn] is	106
2	[Wh adv] difficult [pers pn] is	81
3	how difficult [pers pn] is	79
4	how difficult [pers pn] is	79
5	[adv] difficult [pers pn] is	25
6	more difficult [pers pn] is	23
7	more difficult [pers pn] is	23
8	difficult [conj] [pers pn] is	25
9	difficult [subord] [pers pn] is	21
10	difficult because [pers pn] is	8
11	difficult because [pers pn] is	8
12	difficult as [pers pn] is	6
13	difficult as [pers pn] is	6
14	difficult [pers pn] is [verb]	69
15	difficult [pers pn] is [to-vb]	63
16	difficult [pers pn] is [prep]	26
17	difficult [pers pn] is [prep]	26
18	difficult [pers pn] is for	22
19	difficult [pers pn] is for	22
20	difficult [pers pn] is get	10
21	difficult [pers pn] is to get	10
22	difficult [pers pn] is [adv]	7
23	difficult [pers pn] is [v-ing]	6
24	difficult [pers pn] is [adv]	6