Which set belongs to the both-lips articulation point?

Makhārij al-Ḥurūf — The Fifteen Articulation Points

• ʿAyn, ḥāʾ, ghayn
• Qāf, kāf, ḍād
• B, m and consonantal w
• Ṭāʾ, ẓāʾ, ṣād