Stems fall into ending classes

Endings depend on stems more than in a slot table and much less than in Latin (stem-ending dependence 0.34 against 0.16 and 0.90): stems fall into ending classes, e.g. bench stems (ch-, sh-) take -ey/-dy/-ol, a/o/dai stems take -r/-iin/-l, and da/oka/cha/ota take -m/-n.