In due course , the flow in the Luit Xuti decreased .
Flow came to be known as the Kerkota Xuti ; and the Burhi Xuti expanded via erosion to become the main Brahmaputra River .
In due course , the flow in the Luit Xuti decreased , and it came to be known as the Kerkota Xuti ; and the Burhi Xuti expanded via erosion to become the main Brahmaputra River .