SN4 ""

No	Pattern	Freq
1	what [pers pn] have been [v-ing]	403
2	[Wh det] [pers pn] 've been [v-ing]	192
3	[Wh det] [pers pn] had been [v-ing]	181
4	which [pers pn] have been [v-ing]	175
5	[Wh det] [pers pn] have been doing	147
6	[Wh det] i have been [v-ing]	135
7	[Wh det] he have been [v-ing]	118
8	[Wh det] we have been [v-ing]	110
9	[Wh det] [pers pn] have been [v-ing]	102
10	[Wh det] you have been [v-ing]	81
11	[Wh det] she have been [v-ing]	70
12	[Wh det] [pers pn] 'd been [v-ing]	60
13	[Wh det] they have been [v-ing]	59
14	[Wh det] [pers pn] have been saying	45
15	[Wh det] [pers pn] has been [v-ing]	30
16	[Wh det] [pers pn] have been trying	27
17	[Wh det] [pers pn] have been talking	23
18	[Wh det] [pers pn] 's been [v-ing]	23
19	[Wh det] [pers pn] have been working	18
20	[Wh det] [pers pn] have been looking	17
21	[Wh det] it have been [v-ing]	15
22	[Wh det] [pers pn] have been thinking	14
23	[Wh det] [pers pn] have been waiting	13
24	[Wh det] [pers pn] have been missing	13
25	[Wh det] [pers pn] have been using	12
26	[Wh det] [pers pn] have been going	11
27	whatever [pers pn] have been [v-ing]	10
28	[Wh det] [pers pn] have been discussing	9
29	[Wh det] [pers pn] have been expecting	9
30	[Wh det] [pers pn] have been writing	7