def initial_calculations(input_sets, u_set):
    results = []
    results.append(input_sets[1] & (u_set - input_sets[2]))
    results.append((u_set - input_sets[0]) & input_sets[2])
    results.append(input_sets[0] & input_sets[1])
    results.append(results[1] | results[2])
    results.append(results[0] | results[3])
    results.append((u_set - input_sets[2]) | results[4])
    results.append(input_sets[1] | results[5])
    results.append((u_set - input_sets[0]) | results[6])
    return results