A flock of birds comes, and each bird sits on one branch of the tree. During this process, 3 branches broke, and it is seen that 12 birds did not get a branch to sit. Out of 12 birds, 3 flew away never to return. All the remaining birds formed back the flock and start sitting in groups this time, so everyone gets a branch to sit on. During this process, 3 branch broke again. Later it’s seen that 3 branches are empty, 3 branches have two birds each, and the rest branches have three birds each. How many total birds and branches were at the start?
