"bar code" contains 7 letters.
Three letters code for proteins which are called codons.
The letters on the side of a Spitfire were it's Squadron code ( 2 letters) and it's individual aircraft code.
By code if you mean secret code for secret letters, then no.
... Press capslock?
The 2 Or 3 Letter Code Is Issued As An Airline Identifier By The ITIA
act
There are 14 numbers and letters in a beyblade promo code and i know this because i have many promo codes and they all have 14 numbers and letters.
they are letters to crack an ancient code (The Shape Of Them)
a postal code in America is a code people use to mail letters.
C.a
3 base pairs (3 letters) code for 1 aminoacid and this 3 base pair sequence is called a codon.