Explanation

Five Important Doabs of Pakistan 

Sindh Sagar Doab is b/w: Indus & Jhelum rivers 

Jech Doab is b/w: Jhelum & Chenab rivers 

Bari Doab is b/w: Ravi & Sutlej rivers

Rachna Doab  is b/w: Ravi  & Chenab rivers  

Bias Doab is b/w: Bias & Sutlej rivers 

Doab Chaj is b/w: Chenab and Jhelum.