ABC

We've been singing the abc since I can remember and I laugh every time as lmnop become one letter all run together.
Today our girl was reading the bottom of the world map.
We did it semi together....and I and o were missing. She sounded them all out got a little stuck on r and made the phonic sound.
Why are I and o missing ... ?

We've also got the good old fridge set... But the cat loved batting them round on the floor.