SN4 ""

No	Pattern	Freq
1	[verb] bought a	214
2	have bought a	211
3	[adv] bought a	95
4	[vb past] bought a	92
5	[adv] bought a	81
6	had bought a	74
7	[vb -s] bought a	54
8	has bought a	48
9	[vb base] bought a	44
10	just bought a	30
11	just bought a	30
12	've bought a	24
13	have bought a	19
14	'd bought a	17
15	[be] bought a	15
16	be bought a	15
17	not bought a	14
18	[not/n't] bought a	14
19	[vb infin] bought a	12
20	have bought a	12
21	n't bought a	11
22	recently bought a	10
23	recently bought a	10
24	been bought a	7
25	[v-ing] bought a	7
26	having bought a	7
27	[been] bought a	7
28	also bought a	6
29	already bought a	6
30	already bought a	6