SN4 ""

No	Pattern	Freq
1	is [adv] [adj] [to-vb] that	470
2	is [adv] [adj] to say that	144
3	is not [adj] [to-vb] that	135
4	is [not/n't] [adj] [to-vb] that	135
5	is not [adj] [to-vb] that	132
6	is also [adj] [to-vb] that	92
7	is also [adj] [to-vb] that	92
8	is [adv] important [to-vb] that	69
9	is [adv] true [to-vb] that	65
10	is probably [adj] [to-vb] that	50
11	is probably [adj] [to-vb] that	50
12	is [adv] [adj] to note that	41
13	is [adv] fair [to-vb] that	40
14	is [adv] [adj] to suggest that	32
15	is [adv] [adj] to ensure that	32
16	is [adv] possible [to-vb] that	32
17	is [adv] [adj] to assume that	31
18	is [adv] difficult [to-vb] that	30
19	is [adv] [adj] to find that	30
20	is [adv] surprising [to-vb] that	26
21	is very [adj] [to-vb] that	25
22	is therefore [adj] [to-vb] that	25
23	is [adv] necessary [to-vb] that	25
24	is therefore [adj] [to-vb] that	25
25	is very [adj] [to-vb] that	25
26	is perhaps [adj] [to-vb] that	23
27	is perhaps [adj] [to-vb] that	23
28	is [adv] [adj] to remember that	22
29	is quite [adj] [to-vb] that	22
30	is quite [adj] [to-vb] that	22