def pairwiseScore(seqA, seqB):
    x = 1
    i = 0
    score = 0
    rtnStr = seqA + "\n"
    while i < len(seqA) :
        if seqA[i] == seqB[i]:
             x += 1
             if x > 3:
                 x -= 1
        else:
             x = 1
        if x == 1:
             score -= 1
             rtnStr += " "
        if x == 2:
             score += 1
             rtnStr += "|"
        if x == 3:
            score += 3
            rtnStr += "|"
        i += 1
    rtnStr += "\n" + seqB + " Score: " + str(score)
    return rtnStr