SN4 ""

No	Pattern	Freq
1	[prep] about twenty	122
2	[prep] about twenty	122
3	[be] about twenty	115
4	be about twenty	115
5	[verb] about twenty	113
6	[adv] about twenty	78
7	[was/were] about twenty	54
8	[noun] about twenty	52
9	[adv] about twenty	47
10	was about twenty	37
11	[noun sg] about twenty	36
12	[is] about twenty	35
13	for about twenty	33
14	for about twenty	33
15	[vb pp] about twenty	33
16	[adv prt] about twenty	31
17	[conj] about twenty	29
18	of about twenty	28
19	of about twenty	28
20	's about twenty	28
21	[vb past] about twenty	22
22	get about twenty	20
23	only about twenty	19
24	only about twenty	19
25	in about twenty	18
26	in about twenty	18
27	were about twenty	17
28	[vb base] about twenty	14
29	and about twenty	14
30	[coord] about twenty	14