SN4 ""

No	Pattern	Freq
1	[pers pn] have been [v-ing] for a	101
2	[pers pn] have been [v-ing] for a	87
3	i have been [v-ing] for a	33
4	[pers pn] had been [v-ing] for a	33
5	he have been [v-ing] for a	23
6	[pers pn] 've been [v-ing] for a	18
7	[pers pn] 'd been [v-ing] for a	17
8	[pers pn] have been [v-ing] for a	16
9	[pers pn] have been [v-ing] for an	14
10	they have been [v-ing] for a	13
11	[pers pn] have been looking for a	13
12	[pers pn] 's been [v-ing] for a	11
13	we have been [v-ing] for a	10
14	she have been [v-ing] for a	10
15	it have been [v-ing] for a	9
16	[pers pn] have been waiting for a	8
17	[pers pn] has been [v-ing] for a	6
18	[pers pn] have been working for a	6
19	[pers pn] have been searching for a	5
20	[pers pn] have been trying for a	5