SN4 ""

No	Pattern	Freq
1	[is] [adj] [to-vb] [prep] the [noun]	542
2	is [adj] [to-vb] [prep] the [noun]	502
3	[is] [adj] [to-vb] [prep] the [noun sg]	437
4	[is] [adj] [to-vb] in the [noun]	83
5	[is] [adj] [to-vb] [prep] the [noun pl]	79
6	[is] likely [to-vb] [prep] the [noun]	74
7	[is] [adj] [to-vb] to the [noun]	72
8	[is] [adj] [to-vb] on the [noun]	65
9	[is] [adj] [to-vb] with the [noun]	63
10	[is] [adj] [to-vb] at the [noun]	47
11	's [adj] [to-vb] [prep] the [noun]	40
12	[is] [adj] [to-vb] from the [noun]	35
13	[is] possible [to-vb] [prep] the [noun]	33
14	[is] [adj] [to-vb] for the [noun]	33
15	[is] important [to-vb] [prep] the [noun]	32
16	[is] difficult [to-vb] [prep] the [noun]	32
17	[is] necessary [to-vb] [prep] the [noun]	30
18	[is] able [to-vb] [prep] the [noun]	26
19	[is] easy [to-vb] [prep] the [noun]	22
20	[is] [adj] [to-vb] [prep] the [noun prp]	21
21	[is] due [to-vb] [prep] the [noun]	21
22	[is] [adj] [to-vb] into the [noun]	21
23	[is] [adj] to look [prep] the [noun]	19
24	[is] impossible [to-vb] [prep] the [noun]	18
25	[is] entitled [to-vb] [prep] the [noun]	18
26	[is] [adj] [to-vb] about the [noun]	18
27	[is] [adj] [to-vb] of the [noun]	18
28	[is] hard [to-vb] [prep] the [noun]	17
29	[is] unable [to-vb] [prep] the [noun]	16
30	[is] unlikely [to-vb] [prep] the [noun]	16