The concept of individual Enneatypes will make sense if you picture it like colours in combination with energy, with both aspects capable of direction independent from one another:

• 1: will
• 2: connection
• 3: striving
• 4: melancholy [me]
• 5: rumination [also me]
• 6: worry
• 7: anticipation
• 8: boundaries
• 9: acceptance

Energy:

• Outward (default)
• Inward (bug fixing course correction) [like me]

Colour direction:

• forward (default) [like me]
• backward (bug fixing course correction)

For example - a person who is 4w5 would embody melancholy rumination. A person who is 5w4 would be ruminating on melancholy.