Retirement tax questions

Thank you. You are exactly right. But after I changed it, 8606 form becomes 

 

Line 1: 6000

Line 2: 6000

Line 3: 12000

Line 5: 12000

Line 13: 8000 - where does this come from since line 11 and 12 are empty

Line 14: 4000

Line 16: 12000

Line 17: 8000

LIne 18: 4000 ----- taxable amount :(

 

@DanaB27