AB: make friends widely, can be in various occasions to meet different areas of the people, know to play it by ear, a good chance to make friends is one by one.
Line 2. O: full of power, so can have many opportunities to make friends, nature, cheerful type O people are everyone's pistachios, also easy to cause the opposite sex.
3. Type A: any time needs to have A love of moist, can't stand single and will try their best to find new friends, but type A people are likely to be shy with strangers, meet for the first time is difficult to close.
4. B: it looks very active, and in fact is more passive, even hope to meet more people, also won't own initiative, instead of waiting for each other close, or waiting for the other friends.