Some Secret Codes Part 2

Here is the alphabet:

a b c d e f g h i j k l m n o p q r s t u v w x y z

What happens if we change the rule for decoding so that we move the letters $3$ places to the right?

Try to decode these messages using this new rule,

cfka - x - ylxq,

fqp - qfjb - ql - mixv

Can you invent some messages of your own?

Can you create some different ways of coding?