Trishna

Given is the NMR spectrum and molecule. Could you please help me explain the peaks? I am specially confused because it seems the peaks have merged so I am not sure what peaks to count together. On top of that there are multiple secondary alkanes, and I am not sure about their downshift order. Here's what I am thinking so far: 1: triplet - not sure of the chemical shift value 2: doublet of triplet - between 1.2 - 1.7 3: triplet of triplet - between 1.2 - 1.7 4: triplet of triplet - between 1.2 - 1.7 5: triplet - 4 6: Singlet - (11-12) 7: Triplet - (1-5)