There are only a few in a hundred times that ought does not mark a past particple after a form of the ‘BE’ verb.
1 BE (VBI) BROUGHT (VVN) 83149
2 WAS (VBDZ) BROUGHT (VVN) 73072
3 IS (VBZ) THOUGHT (VVN) 64778
4 BE (VBI) TAUGHT (VVN) 43927
5 IS (VBZ) BROUGHT (VVN) 42006
6 BE (VBI) BOUGHT (VVN) 38694
7 ARE (VBR) TAUGHT (VVN) 37380
8 WAS (VBDZ) CAUGHT (VVN) 35562
9 BEEN (VBN) BROUGHT (VVN) 34843
10 WERE (VBDR) BROUGHT (VVN) 33084
11 BE (VBI) THOUGHT (VVN) 28315
12 BE (VBI) CAUGHT (VVN) 28105
13 ARE (VBR) BROUGHT (VVN) 27832
14 ARE (VBR) THOUGHT (VVN) 25139
15 WAS (VBDZ) THOUGHT (VVN) 24695
16 BEEN (VBN) TAUGHT (VVN) 21985
17 IS (VBZ) TAUGHT (VVN) 20133
18 WAS (VBDZ) BOUGHT (VVN) 19659
19 WAS (VBDZ) TAUGHT (VVN) 19500
20 BEEN (VBN) CAUGHT (VVN) 18841
21 ARE (VBR) CAUGHT (VVN) 16976
22 BEING (VBG) BROUGHT (VVN) 16241
23 BEING (VBG) CAUGHT (VVN) 15833
24 WERE (VBDR) CAUGHT (VVN) 15423
25 BEING (VBG) TAUGHT (VVN) 15093
26 BE (VBI) SOUGHT (VVN) 15071
27 IS (VBZ) CAUGHT (VVN) 14615
28 WERE (VBDR) TAUGHT (VVN) 13605
29 IS (VBZ) SOUGHT (VVN) 10362
30 BEEN (VBN) THOUGHT (VVN) 8347
31 WERE (VBDR) THOUGHT (VVN) 8190
32 WERE (VBDR) BOUGHT (VVN) 7899
33 BEING (VBG) SOUGHT (VVN) 7685
34 BEEN (VBN) BOUGHT (VVN) 6372
35 BE (VBI) FOUGHT (VVN) 6315
36 WAS (VBDZ) FOUGHT (VVN) 6146
37 ARE (VBR) BOUGHT (VVN) 6132
38 IS (VBZ) BOUGHT (VVN) 4775
39 ARE (VBR) SOUGHT (VVN) 4431
FRAUGHT (JJ)
41 BEING (VBG) BOUGHT (VVN) 4261
42 WAS (VBDZ) SOUGHT (VVN) 3604
43 ‘S (VBZ) THOUGHT (VVN) 3354
44 BEING (VBG) FOUGHT (VVN) 2893
45 ‘RE (VBR) CAUGHT (VVN) 2887
46 IS (VBZ) THOUGHT (VVN_NN1) 2750
47 ‘S (VBZ_VHZ@) BROUGHT (VVN) 2566
48 BEEN (VBN) SOUGHT (VVN) 2382
49 WERE (VBDR) FOUGHT (VVN) 2179
50 BEEN (VBN) FOUGHT (VVN) 2010
51 BEING (VBG) THOUGHT (VVN) 1610
52 WERE (VBDR) SOUGHT (VVN) 1547
53 WAS (VBDZ) THOUGHT (VVN_NN1) 1544
54 ARE (VBR) TAUGHT (VVN_JJ@) 1513
55 ‘S (VBZ_VHZ@) CAUGHT (VVN) 1484
56 ‘RE (VBR) TAUGHT (VVN) 1481
57 WAS (VBDZ) DISTRAUGHT (JJ) 1429
58 BE (VBI) FRAUGHT (JJ) 1336
59 ARE (VBR) THOUGHT (VVN_NN1) 1285
60 BE (VBI) TAUGHT (VVN_JJ@) 1282
61 IS (VBZ) FOUGHT (VVN) 1221
62 ARE (VBR) FOUGHT (VVN) 1202
63 ‘S (VBZ) BROUGHT (VVN) 1190
64 WAS (VBDZ) FRAUGHT (JJ) 1086
DROUGHT (NN1)
66 BE (VBI) WROUGHT (VVN) 893
67 ‘S (VBZ_VHZ@) BOUGHT (VVN) 878
69 BEEN (VBN) WROUGHT (VVN) 808
70 IS (VBZ) WROUGHT (VVN) 748
71 WAS (VBDZ) CAUGHT (VVN_JJ@) 689
72 ‘S (VBZ_VHZ@) TAUGHT (VVN) 684
73 BE (VBI) RETHOUGHT (VVN) 676
74 WAS (VBDZ) TAUGHT (VVN_JJ@) 670
DISTRAUGHT (JJ)
77 ‘S (VBZ_VHZ@) THOUGHT (VVN) 626
78 BE (VBI) BOUGHT (VVN_VVD) 626
79 ‘RE (VBR) BROUGHT (VVN) 625
80 WERE (VBDR) TAUGHT (VVN_JJ@) 607
81 ‘S (VBZ_VHZ@) FOUGHT (VVN) 599
82 ‘S (VBZ) CAUGHT (VVN) 584
84 WAS (VBDZ) WROUGHT (VVN) 568
85 ‘M (VBM) CAUGHT (VVN) 495
NAUGHT (PN1)
87 S (VBZ) BROUGHT (VVN) 463
88 BEING (VBG) TAUGHT (VVN_JJ@) 431
89 ‘S (VBZ_GE_VHZ@) THOUGHT (VVN_NN1) 430
90 AM (VBM) CAUGHT (VVN) 423
91 ARE (VBR) WROUGHT (VVN) 411
92 IS (VBZ) OVERBOUGHT (VVN) 377
93 ‘S (VBZ) TAUGHT (VVN) 373
SELF-TAUGHT (JJ)
95 WERE (VBDR) WROUGHT (VVN) 337
96 ARE (VBR) CAUGHT (VVN_JJ@) 330
98 BE (VBI) BROUGHT (VVN_VVD) 291
99 BEING (VBG) WROUGHT (VVN) 273
100 AM (VBM) BROUGHT (VVN) 264