The code itself was patterned so that most control codes were together and all graphic codes were together, for ease of identification.
ðə kˈoʊd ɪtsˈɛlf wʌz pˈætɚnd sˌoʊ ðæt mˈoʊst kəntɹˈoʊl kˈoʊdz wɜː təɡˌɛðɚ ænd ˈɔːl ɡɹˈæfɪk kˈoʊdz wɜː təɡˈɛðɚ, fɔːɹ ˈiːz ʌv aɪdˈɛntɪfɪkˈeɪʃən.