SN4 ""

No	Pattern	Freq
1	[verb] [adv] upon	564
2	[vb past] [adv] upon	130
3	[adv] [adv] upon	129
4	[vb pp] [adv] upon	125
5	depend [adv] upon	113
6	[vb -s] [adv] upon	109
7	[adv] [adv] upon	97
8	[noun] [adv] upon	92
9	[conj] [adv] upon	86
10	[coord] [adv] upon	78
11	rely [adv] upon	67
12	be [adv] upon	66
13	[be] [adv] upon	66
14	[noun sg] [adv] upon	65
15	[vb base] [adv] upon	60
16	depends [adv] upon	53
17	and [adv] upon	52
18	and [adv] upon	52
19	[to-vb] [adv] upon	50
20	[vb infin] [adv] upon	48
21	base [adv] upon	46
22	based [adv] upon	45
23	[v-ing] [adv] upon	42
24	[is] [adv] upon	34
25	is [adv] upon	33
26	focus [adv] upon	26
27	[was/were] [adv] upon	26
28	concentrate [adv] upon	23
29	[noun pl] [adv] upon	21
30	[not/n't] [adv] upon	20