Code:
Corsola:
~Nature Power + Body Slam,
~Nature Power + Double-edge,
~Nature Power + Mimic,
~Nature Power + Defense Curl,
~Nature Power + Selfdestruct,
~Curse + Body Slam,
~Curse + Double-edge,
~Curse + Mimic,
~Curse + Defense Curl,
~Curse + Selfdestruct,
~Screech + Mist,
~Screech + Ingrain,
~Screech + Nature Power,
~Screech + Curse,
~Mist + Barrier,
~Mist + Ingrain,
~Mist + Icicle Spear,
~Amnesia + Icicle Spear,
~Amnesia + Nature Power,
~Barrier + Nature Power,
~Barrier + Curse,
~Ingrain + Icicle Spear,
~Ingrain + Nature Power,
~Confuse Ray + Icicle Spear,
~Confuse Ray + Nature Power,
~Icicle Spear + Nature Power,
~Icicle Spear + Curse,
~Nature Power + Curse,
~Screech + Amnesia + Barrier,
~Mist + Amnesia + Confuse Ray,
~Screech + Amnesia + Body Slam,
~Screech + Amnesia + Double-edge,
~Screech + Amnesia + Mimic,
~Screech + Amnesia + Defense Curl,
~Screech + Amnesia + Selfdestruct,
~Mud Sport + Screech,
~Mud Sport + Mist,
~Mud Sport + Amnesia,
~Mud Sport + Barrier,
~Mud Sport + Ingrain,
~Mud Sport + Confuse Ray,
~Mud Sport + Icicle Spear,
~Mud Sport + Nature Power,
~Mud Sport + Curse;
Added new Curse (HG/SS egg move) combinations.
Mohaji, you're going to need to be a lot more thorough in your list. Double-edge isn't illegal with all egg moves - just 4th gen-only egg moves. This amounts to just Acupressure and Muddy Water, since Knock Off is also a 4th gen move tutor. Icy Wind is a move tutor in the 4th gen as well as the 3rd gen, so it isn't illegal with anything. You also missed Mimic + 4th gen-only egg move; Mimic is a 3rd-gen only tutor move as well as Double-edge.
Since Tentacool isn't in the Ground egg group (it's in Water 3), it can't breed with Smeargle (who can learn every combination of moves in existence thanks to Sketch, making it the ultimate parent for passing down moves for those in the Ground egg group). This means that you now have to take illegal egg move combinations into account. For instance, Skorupi is the only Pokémon that can learn Acupressure and breed with Tentacool, so any egg move for Tentacool that Skorupi cannot learn is an illegal move combination.
What I found extremely helpful when I first started posting lists of illegal move combinations was the list of ways to get illegal movesets at the top of the first post of this thread. Try using that to help you check for illegal move combinations - it helped me a lot!