So I bought this -> D'Addario EJ38H Phosphor Bronze Acoustic Guitar Strings, High Strung/Nashville Tuning, 10-27: Amazon.in: Musical Instruments
The strings are : Plain Steel .010, .014, .009, .012, .018. Phosphor Bronze Wound .027
As you can see, 1st string is wider than 3rd. Is that allowed, or do I need to change the order?