SN4 ""

No	Pattern	Freq
1	have been [v-ing] for [num] years	103
2	have be [v-ing] for [num] years	103
3	has be [v-ing] for [num] years	50
4	had be [v-ing] for [num] years	25
5	have be running for [num] years	15
6	have be [v-ing] for two years	11
7	have be [v-ing] for three years	11
8	have be [v-ing] for [num] years	11
9	have be going for [num] years	10
10	've be [v-ing] for [num] years	10
11	have be [v-ing] for twenty years	8
12	have be flying for [num] years	6
13	have be working for [num] years	6
14	have be trying for [num] years	6
15	have be [v-ing] for five years	6
16	have be [v-ing] for ten years	6
17	have be [v-ing] for 20 years	5