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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
I have made a code that means we move $3$ places to the left to discover what the code stands for. But what will happen to
a b c ?
They pick up the letters left over at the end of the alphabet so that they become
x y z
sdw - d - fdnh,
wkh - zhvw - zlqg - eorzv,
brx - duh - zrunlqj - kdug
Can you invent some messages of your own?
Can you create some different ways of coding?