SN4 ""

No	Pattern	Freq
1	have be [verb] about	808
2	have been [verb] about	806
3	have be [v-ing] about	414
4	have be [vb pp] about	390
5	has be [verb] about	204
6	have be talk about	200
7	've be [verb] about	184
8	have be talking about	182
9	have be [verb] about	153
10	had be [verb] about	140
11	have be think about	97
12	have be thinking about	96
13	have be write about	78
14	have be written about	69
15	have be say about	57
16	have be said about	42
17	have be [verb] about	42
18	'd be [verb] about	36
19	have be make about	32
20	have be made about	32
21	's be [verb] about	31
22	have be express about	30
23	have be tell about	30
24	have be expressed about	30
25	have be told about	29
26	have be learn about	19
27	have be raised about	17
28	have be raise about	17
29	have be talked about	16
30	have be saying about	15