SN4 ""

No	Pattern	Freq
1	[noun] is [adj] to be [v-ing]	42
2	[noun sg] is [adj] to be [v-ing]	31
3	[pron] is [adj] to be [v-ing]	27
4	[pers pn] is [adj] to be [v-ing]	17
5	it is [adj] to be [v-ing]	12
6	it is [adj] to be [v-ing]	12
7	[noun prp] is [adj] to be [v-ing]	9
8	[Wh det] is [adj] to be [v-ing]	6
9	[adj] is [adj] to be [v-ing]	6
10	[det] is [adj] to be [v-ing]	5
11	is [adv] [adj] to be [v-ing]	20
12	is [adv] [adj] to be [v-ing]	15
13	is [not/n't] [adj] to be [v-ing]	5
14	is more [adj] to be [v-ing]	5
15	is more [adj] to be [v-ing]	5
16	is not [adj] to be [v-ing]	5
17	is [adj] to be [prep] [v-ing]	7
18	is [adj] to be [prep] [v-ing]	7
19	is [adj] to be [adv] [v-ing]	5
20	is [adj] to be [v-ing] [prep]	23
21	is [adj] to be [v-ing] [prep]	23
22	is [adj] to be [v-ing] [adj]	10
23	is [adj] to be [v-ing] [adv]	10
24	is [adj] to be [v-ing] [art]	9
25	is [adj] to be [v-ing] [art]	9
26	is [adj] to be [v-ing] the	6
27	is [adj] to be [v-ing] the	6
28	is [adj] to be [v-ing] [noun]	6
29	is [adj] to be [v-ing] [adv prt]	6
30	is [adj] to be [v-ing] [noun sg]	5