How to compress multiple lists into one list and keeping the same size list?

I am trying to merge multiple lists that outputs 1 list of all the values and keep the zeros.
The indices and values need to be kept in the same index location.

Input:

list1 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0]
list2 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12]
list3 = [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
list4 = [0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0]
list5 = [0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0]
list6 = [0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0]
list7 = [0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0]
list8 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
list9 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
list10 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
list11 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
list12 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

This is what I want the output to be..

Output:

results = [1,0,0,4,5,6,7,0,0,0,11,12]

>Solution :

If you want to go with list comprehension and all lists have the same lengths..

results = []
for i in range(len(list1)):
    results.append(list1[i]+list2[i]+list3[i]+list4[i]+list5[i]+list6[i]+list7[i]+list8[i]+list9[i]+list10[i]+list11[i]+list12[i])

This would get the job done even though it’s ugly.