SN4 ""

No	Pattern	Freq
1	[is] [adv] [verb] and	1285
2	is [adv] [verb] and	1172
3	[is] [adv] [vb pp] and	1096
4	[is] well [verb] and	122
5	[is] [adv] [v-ing] and	117
6	's [adv] [verb] and	113
7	[is] then [verb] and	63
8	[is] now [verb] and	50
9	[is] both [verb] and	42
10	[is] [adv] [to-vb] and	38
11	[is] still [verb] and	37
12	[is] also [verb] and	35
13	[is] [adv] [vb base] and	32
14	[is] already [verb] and	30
15	[is] [adv] know and	30
16	[is] fully [verb] and	30
17	[is] [adv] known and	29
18	[is] always [verb] and	28
19	[is] easily [verb] and	28
20	[is] often [verb] and	25
21	[is] highly [verb] and	25
22	[is] [adv] establish and	21
23	[is] [adv] established and	21
24	[is] [adv] write and	18
25	[is] constantly [verb] and	18
26	[is] [adv] written and	17
27	[is] [adv] use and	17
28	[is] [adv] used and	17
29	[is] widely [verb] and	15
30	[is] properly [verb] and	15