SN4 ""

No	Pattern	Freq
1	[noun] be [to-vb] [adv] the [adj]	80
2	[noun sg] be [to-vb] [adv] the [adj]	68
3	[pron] be [to-vb] [adv] the [adj]	12
4	[verb] be [to-vb] [adv] the [adj]	9
5	[vb mod] be [to-vb] [adv] the [adj]	8
6	[modal v] be [to-vb] [adv] the [adj]	8
7	[pers pn] be [to-vb] [adv] the [adj]	7
8	[noun pl] be [to-vb] [adv] the [adj]	7
9	have be [to-vb] [adv] the [adj]	6
10	will be [to-vb] [adv] the [adj]	5
11	will be [to-vb] [adv] the [adj]	5
12	be [adj] [to-vb] [adv] the [adj]	215
13	be [adj] [to-vb] [adv] the [adj]	207
14	be [verb] [to-vb] [adv] the [adj]	183
15	be [vb pp] [to-vb] [adv] the [adj]	131
16	be [v-ing] [to-vb] [adv] the [adj]	49
17	be able [to-vb] [adv] the [adj]	48
18	be able [to-vb] [adv] the [adj]	48
19	be difficult [to-vb] [adv] the [adj]	22
20	be difficult [to-vb] [adv] the [adj]	22
21	be used [to-vb] [adv] the [adj]	20
22	be use [to-vb] [adv] the [adj]	20
23	be going [to-vb] [adv] the [adj]	16
24	be go [to-vb] [adv] the [adj]	16
25	be [adv] [to-vb] [adv] the [adj]	14
26	be necessary [to-vb] [adv] the [adj]	12
27	be necessary [to-vb] [adv] the [adj]	12
28	be ask [to-vb] [adv] the [adj]	9
29	be try [to-vb] [adv] the [adj]	9
30	be asked [to-vb] [adv] the [adj]	9