This is where the fun and headaches really start coming into play, trying to understand this mess of letters within this Punnett Square. The reason I have not used colour coding this time, is because the Punnett Square will look like a Christmas Tree... This pairing is a Double het for Candy Pied x Double het for Candy Pied.
The resulted breeding provides us with:
1 x Normal (MMRR)
4 x double het Candy Pied (MmRr)
2 x het Candy (MmRR)
2 x het Pied (MMRr)
1 x Candy (mmRR)
1 x Pied (MMrr)
2 x Candy het Pied (mmRr)
2 x Pied het candy (Mmrr)
1 x Candy Pied (mmrr)