Edinburgh's Submissions to the 2020 Machine Translation Efficiency Task. - Nikolay Bogoychev; Roman Grundkiewicz; Alham Fikri Aji; Maximiliana Behnke; Kenneth Heafield; Sidharth Kashyap; Emmanouil-Ioannis Farsarakis; Mateusz Chudyk (NGT@ACL, 2020)