task2

def upperSwitch(l1,l2):
    l = len(l1)
    output = []
    for i in range(l):
        temp = []
        for j in range(l):
            if ord(l1[i][j]) >= 97 and ord(l2[i][j]) >= 97:
                temp.append("**")
            elif ord(l1[i][j]) < 97 and ord(l2[i][j]) < 97:
                temp.append("++")
            elif ord(l1[i][j]) >= 97 and ord(l2[i][j]) < 97:
                temp.append(l2[i][j])
            elif ord(l1[i][j]) < 97 and ord(l2[i][j]) >= 97:
                temp.append(l1[i][j])
        output.append(temp)

    return output