SN4 ""

No	Pattern	Freq
1	[pron] [was/were] that	1156
2	[noun] [was/were] that	1101
3	[noun sg] [was/were] that	919
4	[pers pn] [was/were] that	521
5	[Wh det] [was/were] that	401
6	what [was/were] that	374
7	what [was/were] that	374
8	it [was/were] that	369
9	it [was/were] that	367
10	[adj] [was/were] that	336
11	[adv] [was/were] that	331
12	[det] [was/were] that	262
13	[Wh adv] [was/were] that	237
14	that [was/were] that	203
15	that [was/were] that	203
16	[verb] [was/were] that	195
17	[noun pl] [was/were] that	116
18	[ex0] [was/were] that	109
19	there [was/were] that	109
20	there [was/were] that	109
21	[vb past] [was/were] that	100
22	who [was/were] that	94
23	[Wh pn] [was/were] that	94
24	who [was/were] that	94
25	[conj] [was/were] that	93
26	[adv] [was/were] that	89
27	[coord] [was/were] that	79
28	where [was/were] that	77
29	where [was/were] that	77
30	why [was/were] that	72