SN4 ""

No	Pattern	Freq
1	[to-vb] what was [verb]	270
2	[to-vb] what was [v-ing]	181
3	[to-vb] what was go	85
4	[to-vb] what was going	85
5	[to-vb] what was happen	81
6	[to-vb] what was [vb pp]	81
7	to see what was [verb]	80
8	[to-vb] what was happening	79
9	to know what was [verb]	38
10	to understand what was [verb]	17
11	[to-vb] what was leave	12
12	[to-vb] what was left	12
13	[to-vb] what was say	11
14	[to-vb] what was said	11
15	[to-vb] what was [to-vb]	8
16	to explain what was [verb]	7
17	to hear what was [verb]	7
18	[to-vb] what was mean	6
19	[to-vb] what was require	6
20	[to-vb] what was required	6
21	[to-vb] what was meant	6
22	[to-vb] what was expected	5
23	[to-vb] what was expect	5
24	[to-vb] what was come	5