First 12 even numbers are written from top to bottom. The letters of word ‘SACRED’ are written in alphabetical order from top to bottom against each m...

First 12 even numbers are written from top to bottom. The letters of word ‘SACRED’ are written in alphabetical order from top to bottom against each multiple of 4 (One letter against one number). There are 2 letters between N and S. There are as many letters between E and N as between P and D. P is not against number 14. There are 5 letters between U and T. U is above T. I is written against number 6. (No letter is repeated against any number)
If there are 3 alphabets in the English alphabetical series between the alphabets written against numbers 10 and 22, then how many alphabets are there between the alphabets written against numbers 18 and 22?