SN4 ""

No	Pattern	Freq
1	[prep] [det] question of	50
2	[prep] [det] question of	50
3	be [det] question of	49
4	[be] [det] question of	49
5	[verb] [det] question of	33
6	[is] [det] question of	28
7	on [det] question of	20
8	on [det] question of	20
9	is [det] question of	20
10	[adv] [det] question of	18
11	[adv] [det] question of	16
12	to [det] question of	11
13	never [det] question of	11
14	never [det] question of	11
15	to [det] question of	11
16	was [det] question of	9
17	[was/were] [det] question of	9
18	be [det] question of	8
19	's [det] question of	8
20	[conj] [det] question of	8
21	[be] [det] question of	8
22	[v-ing] [det] question of	7
23	ask [det] question of	7
24	[vb past] [det] question of	6
25	[to-vb] [det] question of	6
26	[vb infin] [det] question of	6
27	of [det] question of	6
28	of [det] question of	6
29	[pron] [det] question of	6
30	there [det] question of	5