SN4 ""

No	Pattern	Freq
1	[verb] [adv] at the back	87
2	[noun] [adv] at the back	41
3	[noun sg] [adv] at the back	34
4	[vb past] [adv] at the back	31
5	[be] [adv] at the back	24
6	be [adv] at the back	24
7	[pron] [adv] at the back	20
8	[v-ing] [adv] at the back	20
9	[vb pp] [adv] at the back	19
10	[pers pn] [adv] at the back	17
11	[adv] [adv] at the back	16
12	[is] [adv] at the back	13
13	[conj] [adv] at the back	12
14	[coord] [adv] at the back	11
15	it [adv] at the back	10
16	it [adv] at the back	10
17	and [adv] at the back	9
18	[adv] [adv] at the back	9
19	and [adv] at the back	9
20	[vb base] [adv] at the back	8
21	's [adv] at the back	8
22	[noun pl] [adv] at the back	6
23	[was/were] [adv] at the back	6
24	tuck [adv] at the back	6
25	[vb -s] [adv] at the back	5
26	is [adv] at the back	5
27	was [adv] at the back	5
28	[adv prt] [adv] at the back	5
29	[adv] [verb] at the back	38
30	[adv] [adj] at the back	20