Present Perfect Continuous

verb is placed before the subject
Have I’ve been working for two years
In the negative form the negative partial not is placed after the auxiliary verb
I haven’t been working for two years.

the Past indefinite of the auxiliary verb to have and Participial II of the notional verb.
In the interrogative form the auxiliary verb is placed before the subject.
In the negative form the negative participle not is placed after the auxiliary verb.