So far Leopard and pied keep proving themselves to be allelic, so you can have 2 pieds genes (aka pied), a pied and a leopard gene (aka leopard pied), or 2 leopards genes (aka super leopard).
and if you were asking about pairing them:
Male: Het PiebaldFemale: LeopardPercent Fraction Traits 25% 1/4 Leopard Pied 25% 1/4 Het Piebald 25% 1/4 Leopard 25% 1/4 Normal
Male: Female: LeopardPercent Fraction Traits 50% 1/2 Leopard Pied 50% 1/2 Het Piebald