SN4 ""

No	Pattern	Freq
1	[verb] how [prep] earth	32
2	wonder how [prep] earth	26
3	[conj] how [prep] earth	18
4	[coord] how [prep] earth	16
5	[vb past] how [prep] earth	12
6	but how [prep] earth	11
7	but how [prep] earth	11
8	wondering how [prep] earth	10
9	[v-ing] how [prep] earth	10
10	wondered how [prep] earth	10
11	[adv] how [prep] earth	9
12	[adv] how [prep] earth	8
13	and how [prep] earth	5
14	and how [prep] earth	5
15	how [prep] earth [verb]	70
16	how [prep] earth [vb mod]	62
17	how [prep] earth [modal v]	62
18	how [prep] earth do	60
19	how [prep] earth [vb past]	41
20	how [prep] earth [pron]	35
21	how [prep] earth [pers pn]	33
22	how [prep] earth did	33
23	how [prep] earth can	29
24	how [prep] earth can	29
25	how [prep] earth be	25
26	how [prep] earth [be]	25
27	how [prep] earth could	24
28	how [prep] earth could	24
29	how [prep] earth [vb base]	18
30	how [prep] earth do	15