past perfect continous tense

1. Positif
Pola kalimat:
Subyek + had + been + infinitive + ing
Contoh kalimat:
• They had been living here for three years when I came
• She had been being sick for four days when we went to jakarta
2. Negatif
Pola kalimat:
Subyek + had + not + been + infinitive + ing
Contoh kalimat:
• They hadn't been living here for three years when I came
• She hadn't been being sick for four days when we went to jakarta
3. Tanya
Pola kalimat:
Had + subyek + been + infinitive + ing ?
Contoh kalimat:
• Had they been living here for three years when I came?
• Had she been being sick for four days when we went to jakarta?