SN4 ""

No	Pattern	Freq
1	[noun] but unless [pron]	5
2	but [unc] unless [pron]	7
3	but [no cls] unless [pron]	7
4	but unless [pron] [verb]	53
5	but unless [pron] [be]	42
6	but unless [pron] be	41
7	but unless [pron] [vb base]	39
8	but unless [pron] [am/are]	19
9	but unless [pron] [is]	17
10	but unless [pron] have	17
11	but unless [pron] is	13
12	but unless [pron] are	11
13	but unless [pron] [vb mod]	10
14	but unless [pron] [modal v]	10
15	but unless [pron] can	9
16	but unless [pron] can	9
17	but unless [pron] [vb -s]	8
18	but unless [pron] [was/were]	6
19	but unless [pron] [vb past]	6
20	but unless [pron] 're	6
21	but unless [pron] have	6
22	but unless [pron] 've	5
23	but unless [pron] do	5
24	but unless [pron] was	5
25	but unless [pron] do	5