LTSM;;   
https://colab.research.google.com/drive/1U0-d3rWZp_z-p7r3L4yE1vxeS3RL-NfG?usp=sharing

Seq2seq

https://colab.research.google.com/drive/11mcIrgKqm536dE0vL-5zMg-pPQFnSQG4?usp=sharing