SN4 ""

No	Pattern	Freq
1	[verb] back [adv] and	207
2	[vb past] back [adv] and	71
3	come back [adv] and	65
4	go back [adv] and	52
5	[vb base] back [adv] and	34
6	[noun] back [adv] and	33
7	[vb infin] back [adv] and	32
8	[pron] back [adv] and	30
9	[pers pn] back [adv] and	29
10	[to-vb] back [adv] and	25
11	went back [adv] and	21
12	came back [adv] and	19
13	[vb pp] back [adv] and	19
14	[v-ing] back [adv] and	18
15	[noun sg] back [adv] and	18
16	come back [adv] and	17
17	come back [adv] and	16
18	get back [adv] and	16
19	[be] back [adv] and	14
20	be back [adv] and	14
21	it back [adv] and	12
22	it back [adv] and	12
23	[noun pl] back [adv] and	11
24	[adv] back [adv] and	9
25	look back [adv] and	9
26	to go back [adv] and	9
27	go back [adv] and	8
28	[vb -s] back [adv] and	8
29	sit back [adv] and	7
30	[was/were] back [adv] and	6