SN4 ""

No	Pattern	Freq
31	but it could	380
32	but it could	380
33	but [noun] could	284
34	but you could	255
35	but you could	255
36	but they could	218
37	but they could	218
38	but [adv] could	195
39	but [noun prp] could	181
40	but we could	180
41	but we could	180
42	but [adj] could	146
43	but [Wh adv] could	144
44	but [det] could	143
45	but how could	124
46	but how could	124
47	but [indef pn] could	91
48	but [Wh det] could	60
49	but this could	59
50	but this could	59
51	but [noun pl] could	55
52	but that could	52
53	but that could	52
54	but [adv] could	50
55	but there could	47
56	but [ex0] could	47
57	but there could	47
58	but [noun sg] could	42
59	but what could	37
60	but what could	37