SN4 ""

No	Pattern	Freq
1	[be] often thought	56
2	be often thought	56
3	[verb] often thought	46
4	have often thought	46
5	[is] often thought	32
6	[vb base] often thought	30
7	is often thought	29
8	[am/are] often thought	20
9	are often thought	19
10	have often thought	17
11	[vb past] often thought	15
12	had often thought	14
13	've often thought	13
14	[noun] often thought	7
15	[adv] often thought	5
16	[adv] often thought	5
17	[noun prp] often thought	5
18	often [be] thought	6
19	often be thought	6
20	often [been] thought	5
21	often [adv] thought	5
22	often been thought	5
23	often thought [prep]	63
24	often thought [prep]	63
25	often thought of	42
26	often thought of	42
27	often thought [conj]	17
28	often thought [that]	16
29	often thought that	16
30	often thought that	16