AB: strong sense of balance, broad vision, good at objective and multi-angle view, even hard work can improvise, glory.
2. O: not as competent as AB, but has a fitness, focus on ability is very strong, because often can complete the job satisfactorily.
3. B: is not "not wrong", but they will encounter problems in a unique way to solve, because their personality by instinct, flexible and brains.
4. Type A: don't understand work main point, will also take personal factors to work, even experienced people are also not allowed to make mistakes.