SN4 ""

No	Pattern	Freq
1	[noun] at the back [prep]	584
2	[noun sg] at the back [prep]	473
3	[verb] at the back [prep]	253
4	[adv] at the back [prep]	110
5	[noun pl] at the back [prep]	107
6	[adv] at the back [prep]	82
7	[vb pp] at the back [prep]	78
8	be at the back [prep]	64
9	[be] at the back [prep]	64
10	[v-ing] at the back [prep]	63
11	[vb past] at the back [prep]	60
12	[pron] at the back [prep]	41
13	sit at the back [prep]	35
14	[adj] at the back [prep]	33
15	[conj] at the back [prep]	33
16	[was/were] at the back [prep]	29
17	[adv prt] at the back [prep]	26
18	[coord] at the back [prep]	23
19	[adj] at the back [prep]	23
20	[is] at the back [prep]	23
21	was at the back [prep]	23
22	[vb base] at the back [prep]	19
23	[pers pn] at the back [prep]	19
24	stand at the back [prep]	18
25	room at the back [prep]	18
26	sitting at the back [prep]	18
27	room at the back [prep]	18
28	[indef pn] at the back [prep]	17
29	is at the back [prep]	15
30	and at the back [prep]	14