1-5: Spinning, Gust, Aeolian, Dancing, Shadow
Ctrl+1-5: Assassinate, Mug, Blood for Blood, Internal Release, Shukuchi
Alt+1-5: Targeting macro, macro, macro, Kassatsu, Invigorate
Shift+1-5: Ten, Chi, Jin, Ninjutsu, Trick Attack
2 mouse side buttons: Mug, Jugulate
Ctrl+mouse: Death Blossom, Goad (macro)
Alt+Mouse: Second Wind, Perfect Dodge
Shift+Mouse: Chocobo, Hide

Poisons, Sneak Attack, Throwing Daggers, and Mantra are infrequently used, though Throw and Mantra are on 6 and Ctrl6 because they're less niche than the others. Really, I don't need the targeting macros or Hide, so I could rearrange things, but I'm used to this setup.