Here is the patterns on the 1st 3 strings in minor and major pentatonics.

Here is the 3 string minor pentatonic:

A minor Pentatonic

Here is the 3 string Major pentatonic:

A Major Pentatonic

Here are the 5 3 string patterns for each:

Pattern 1 minor

Pattern 1 Major

Root - 1st Pattern

Pattern 2 minor

Pattern 2 Major

Root - 2nd Pattern

Pattern 3 minor

Pattern 3 Major

Root - 3rd Pattern

Pattern 4 minor

Pattern 4 Major

Root - 4th Pattern

Pattern 5 minor

Pattern 5 Major

Root - 5th Pattern