62. Arrange 7 small cubes to form a "T" shape, then paint the surface red, and finally separate the small cubes. The number of small cubes with 3 faces painted red is $\qquad$.

Arrange 7 small cubes to form a "T" shape, then paint the surface red, and finally separate the small cubes. The number of small cubes with 3 faces painted red is $\qquad$.