Syllable tree

there are 16 layers:
* l1: 1 upgrade
* l2: 3 upgrades
* l3: 3 upgrades
* l4: 2 upgrades
* l5: 4 upgrades
* l6: 3 upgrades
* l7: 5 upgrades
* l8: 3 upgrades
* l9: 3 upgrades
* l10: 3 upgrades
* l11: 3 upgrades
* l12: 3 upgrades
* l13: 1 upgrade
* l14: 3 upgrades
* l15: 2 upgrades
* l16: 6 upgrades
its also unlocked at 1e75000 RP