The melodic minor scale contains seven modes. They are, from the first up (in the key of A minor):
The guitar pattern for the scale is:
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The bass pattern for the scale is:
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The piano pattern for the scale is:
A B C D E F# G# A
1 2 3 1 2 3 4 5
Source: The Keyboard Grimoire (book), Advanced Scale Concepts and Licks for Guitar (book)