SN4 ""

No	Pattern	Freq
1	be base on a [noun]	343
2	[be] base on a [noun]	343
3	[is] base on a [noun]	140
4	is base on a [noun]	137
5	[noun] base on a [noun]	134
6	[noun sg] base on a [noun]	104
7	[was/were] base on a [noun]	87
8	was base on a [noun]	76
9	be base on a [noun]	57
10	[be] base on a [noun]	57
11	[am/are] base on a [noun]	49
12	are base on a [noun]	47
13	[adv] base on a [noun]	45
14	[adv] base on a [noun]	42
15	[noun pl] base on a [noun]	24
16	[conj] base on a [noun]	13
17	were base on a [noun]	11
18	[coord] base on a [noun]	11
19	and base on a [noun]	8
20	been base on a [noun]	8
21	[been] base on a [noun]	8
22	and base on a [noun]	8
23	[adj] base on a [noun]	6
24	system base on a [noun]	6
25	[verb] base on a [noun]	5
26	firmly base on a [noun]	5
27	system base on a [noun]	5
28	firmly base on a [noun]	5
29	[n mass] base on a [noun]	5
30	base [adv] on a [noun]	13