SN4 ""

No	Pattern	Freq
1	[noun] be [adv] [v-ing] to be	169
2	[noun] be [adv] [v-ing] to [be]	169
3	[noun] be [adv] going to [be]	108
4	[noun sg] be [adv] [v-ing] to [be]	93
5	[noun] is [adv] [v-ing] to [be]	57
6	[noun] was [adv] [v-ing] to [be]	56
7	[noun pl] be [adv] [v-ing] to [be]	42
8	[noun] are [adv] [v-ing] to [be]	36
9	[noun prp] be [adv] [v-ing] to [be]	30
10	[noun] be always [v-ing] to [be]	23
11	[noun] be [adv] beginning to [be]	21
12	[noun] be never [v-ing] to [be]	20
13	[noun] were [adv] [v-ing] to [be]	14
14	[noun] be now [v-ing] to [be]	13
15	[noun] be still [v-ing] to [be]	11
16	[noun] be only [v-ing] to [be]	10
17	[noun] be just [v-ing] to [be]	10
18	[noun] be probably [v-ing] to [be]	9
19	[noun] be obviously [v-ing] to [be]	8
20	[noun] be also [v-ing] to [be]	8
21	[noun] be [adv] having to [be]	7
22	[noun] be already [v-ing] to [be]	7
23	[noun] 's [adv] [v-ing] to [be]	6
24	[noun] be [adv] waiting to [be]	6
25	[noun] be actually [v-ing] to [be]	5