SN4 ""

No	Pattern	Freq
1	[verb] [adv] bought	301
2	have [adv] bought	299
3	[vb base] [adv] bought	123
4	[vb past] [adv] bought	110
5	be [adv] bought	92
6	[be] [adv] bought	92
7	had [adv] bought	84
8	have [adv] bought	75
9	[vb -s] [adv] bought	63
10	has [adv] bought	50
11	[was/were] [adv] bought	50
12	've [adv] bought	46
13	[noun] [adv] bought	33
14	[adv] [adv] bought	32
15	was [adv] bought	31
16	'd [adv] bought	26
17	[am/are] [adv] bought	24
18	[conj] [adv] bought	23
19	[adv] [adv] bought	22
20	are [adv] bought	22
21	[coord] [adv] bought	20
22	and [adv] bought	19
23	were [adv] bought	19
24	and [adv] bought	19
25	[pron] [adv] bought	17
26	[noun pl] [adv] bought	14
27	[is] [adv] bought	13
28	's [adv] bought	13
29	[pers pn] [adv] bought	13
30	[noun sg] [adv] bought	11