SN4 ""

No	Pattern	Freq
31	it [be] time for [det] [noun]	12
32	it [be] time for [det] [noun]	12
33	it [be] impossible for [det] [noun]	10
34	it [be] impossible for [det] [noun]	10
35	it [be] important for [det] [noun]	10
36	it [be] important for [det] [noun]	10
37	it [be] necessary for [det] [noun]	7
38	it [be] hard for [det] [noun]	7
39	it [be] hard for [det] [noun]	7
40	it [be] necessary for [det] [noun]	7
41	it [be] difficult for [det] [noun]	6
42	it [be] difficult for [det] [noun]	6
43	it [be] perhaps for [det] [noun]	6
44	it [be] perhaps for [det] [noun]	6
45	it [be] precisely for [det] [noun]	5
46	it [be] precisely for [det] [noun]	5
47	it [be] good for [det] [noun]	5
48	it [be] essential for [det] [noun]	5
49	it [be] n't for [det] [noun]	5
50	it [be] [adj -er] for [det] [noun]	5
51	it [be] probably for [det] [noun]	5
52	it [be] essential for [det] [noun]	5
53	it [be] [v-ing] for [det] [noun]	5
54	it [be] usual for [det] [noun]	5
55	it [be] usual for [det] [noun]	5
56	it [be] probably for [det] [noun]	5
57	it [be] for [pron] [det] [noun]	13
58	it [be] for [pos pn] [det] [noun]	12
59	it [be] for [adv] [det] [noun]	6
60	it [be] for your [det] [noun]	6