SN4 ""

No	Pattern	Freq
1	[adv] [pron] could have	351
2	[adv] [pers pn] could have	337
3	[adv] we could have	67
4	[adv] we could have	67
5	[adv] i could have	66
6	[adv] i could have	66
7	[adv] you could have	65
8	[adv] you could have	64
9	then [pron] could have	50
10	[adv] he could have	49
11	[adv] he could have	49
12	perhaps [pron] could have	39
13	[adv] they could have	34
14	[adv] they could have	33
15	[adv] she could have	31
16	only [pron] could have	31
17	[adv] she could have	31
18	well [pron] could have	30
19	so [pron] could have	30
20	[adv] it could have	25
21	[adv] it could have	25
22	maybe [pron] could have	24
23	else [pron] could have	10
24	more [pron] could have	9
25	yet [pron] could have	8
26	surely [pron] could have	8
27	otherwise [pron] could have	8
28	there [pron] could have	8
29	[adv] [indef pn] could have	7
30	least [pron] could have	6