python tkinter - detecting arrow keys when an alternate key is pressed

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I am using python and tkinter, and wish to capture if an arrow key is pressed, when one of the alternate keys is down.
I have the following working, for detecting shift, or control, but I can't figure out what the the mask needs to be for detecting if an alternate key is down when an arrow key is pressed.
print("space bar")

print("shift and down arrow")
print("shift and up arrow")
print("shift and left arrow")
print("shift and right arrow")

print("control and down arrow")
print("control and up arrow")
print("control and left arrow")
print("control and right arrow")

print("alternate and down arrow")
print("alternate and up arrow")
print("alternate and left arrow")
print("alternate and right arrow")

print("space bar")

print("shift and down arrow")
print("shift and up arrow")
print("shift and left arrow")
print("shift and right arrow")

print("control and down arrow")
print("control and up arrow")
print("control and left arrow")
print("control and right arrow")

print("alternate and down arrow")
print("alternate and up arrow")
print("alternate and left arrow")
print("alternate and right arrow")

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