SN4 ""

No	Pattern	Freq
1	[verb] [adv] either	399
2	[be] [adv] either	124
3	be [adv] either	124
4	[adv] [adv] either	108
5	[noun] [adv] either	85
6	[vb pp] [adv] either	83
7	[vb infin] [adv] either	72
8	[pron] [adv] either	71
9	[vb past] [adv] either	69
10	[vb base] [adv] either	69
11	[vb mod] [adv] either	66
12	[modal v] [adv] either	66
13	do [adv] either	64
14	[adv] [adv] either	59
15	[pers pn] [adv] either	53
16	[noun sg] [adv] either	51
17	[to-vb] [adv] either	46
18	[was/were] [adv] either	40
19	[am/are] [adv] either	37
20	[conj] [adv] either	37
21	[is] [adv] either	37
22	[v-ing] [adv] either	36
23	not [adv] either	34
24	[not/n't] [adv] either	34
25	[adj] [adv] either	34
26	is [adv] either	32
27	are [adv] either	31
28	[coord] [adv] either	29
29	do [adv] either	26
30	was [adv] either	25