SN4 ""

No	Pattern	Freq
1	been [v-ing] for [noun pl]	184
2	been [v-ing] for year	82
3	been [v-ing] for years	82
4	been [v-ing] for [noun sg]	66
5	been [v-ing] for [noun prp]	44
6	been waiting for [noun]	25
7	been looking for [noun]	23
8	been trying for [noun]	15
9	been [v-ing] for age	15
10	been [v-ing] for ages	15
11	been doing for [noun]	13
12	been [v-ing] for months	13
13	been [v-ing] for month	13
14	been campaigning for [noun]	10
15	been working for [noun]	10
16	been [v-ing] for days	10
17	been [v-ing] for day	10
18	been [v-ing] for week	9
19	been searching for [noun]	9
20	been pressing for [noun]	9
21	been [v-ing] for hours	9
22	been [v-ing] for hour	9
23	been playing for [noun]	9
24	been going for [noun]	8
25	been fighting for [noun]	8
26	been [v-ing] for weeks	8
27	been [v-ing] for decades	7
28	been [v-ing] for decade	7
29	been [v-ing] for [n mass]	6
30	been driving for [noun]	6