e,h,m,o,r,t
,No. of words starting with E = 5!
then the next is words starting with H = 5!
then the next is words starting with M E = 4!
then the next is words starting with M H = 4!
then the next is words starting with M O E = 3!
then the next is words starting with M O H = 3!
then the next is words starting with M O R = 3!
then the next is words starting with M O T E = 2!
M O T H E R