INDIAN
Lets arrange the letters alphabetically = ADIINN
Words starting with A = 5!/(2!*2!) = 30
Words starting with D = 5!/(2!*2!) = 30
Words starting with IA = 4!/(2!) = 12
Words starting with ID = 4!/(2!) = 12
Words starting with II = 4!/(2!) = 12
Words starting with INA = 3! = 6
Words starting with INDA = 2! = 2
and the next word is INDIAN = 1