SN4 ""

No	Pattern	Freq
1	had [to-vb] [adv prt] [to-vb]	49
2	had [to-vb] [adv] [to-vb]	39
3	had [to-vb] [Wh adv] [to-vb]	16
4	had [to-vb] how [to-vb]	15
5	had [to-vb] how [to-vb]	15
6	had to go [adv] [to-vb]	12
7	had to learn [adv] [to-vb]	10
8	had [to-vb] up [to-vb]	7
9	had [to-vb] back [to-vb]	7
10	had [to-vb] back [to-vb]	7
11	had [to-vb] up [to-vb]	7
12	had [to-vb] [adv] to get	7
13	had [to-vb] in [to-vb]	6
14	had [to-vb] [adv] to see	6
15	had [to-vb] down [to-vb]	6
16	had [to-vb] out [to-vb]	6
17	had [to-vb] in [to-vb]	6
18	had [to-vb] down [to-vb]	6
19	had to move [adv] [to-vb]	6
20	had [to-vb] out [to-vb]	6