Again breeding, not tutored. From what I understand about how breeding works here, the pokemon if both parents know the move and it's a lvl up move it would be passed down to the child.
And those pokemon don't need to be the in the 50s bracket cause their previous forms don't evolve to lvl 55, it gives the 100 bracket something to use, it isn't meant for lvl 50. If you want to use them in the 50s bracket then use Dragonair or Pupitar.