How many such pairs of letters are there in the word INTERNATIONAL (in both forward and backward directions) which have as many letters between them in the word as there are in the English alphabetical order?

Forward$$\rightarrow$$ I to N, N to T

Backsword:$$\rightarrow$$L to N, L to O, N to O, R to T

So, there are 6 such pairs of letters in the word where the number of letters between them is the same as the number of positions between them in the alphabet.