SN4 ""

No	Pattern	Freq
1	when it [verb] the [noun]	183
2	when it [verb] the [noun sg]	145
3	when it [vb past] the [noun]	98
4	when it [vb -s] the [noun]	84
5	when it [verb] the [noun pl]	25
6	when it reach the [noun]	17
7	when it hit the [noun]	14
8	when it [verb] the [noun prp]	11
9	when it reaches the [noun]	10
10	when it hit the [noun]	9
11	when it reached the [noun]	7
12	when it become the [noun]	6
13	when it get the [noun]	6
14	when it leave the [noun]	6
15	when it became the [noun]	6
16	when it enter the [noun]	5
17	when it hits the [noun]	5
18	when it take the [noun]	5
19	when it announce the [noun]	5