hi
i request a c program for my own purpose.
there are 26 alphabets.a to z.
the input is 2 alphabets (for eg a and b)
the combinator should generate a string of length 9 like a b c d e f g h i.
with a given input of two alphabets and it should not consist repetitions.
like if it generates a b c d e f g h i ,it should not generate strings
like   a b d c f g i h.
can any give the program for this please.