How to find identical bitposition in a string?

Question

I have created a sequence of bitstring. Now I want to calculate the identical bit positions all sequences one by one. I don't understand how to find it.

S1: 00010101110011100010000110000111010100101010101110101011001111100010110101110001001010010111010110000111110110100100100111000100
    for round in range(0, 5):
    rawvalues_sim_str = "".join(rawvalues_sim)
    startindex=0
    endindex=128
    for i in range(0, len(rawvalues_sim_str),128):
        b=rawvalues_sim_str[startindex:endindex]
        startindex = endindex
        endindex += 128
        #Find sequence in bitstring 
        if b[round] == round:
            d = b[round]
            print(d)
    print(b)