You should make your own cards for maximal impact. Anki is great for languages or anything really. 
nostr:nevent1qqsyzp4laa37nrcwe4nlggxy87dqepuepy2l3zx2ldfdzzx62cv0laspzamhxue69uhhyetvv9ujuurjd9kkzmpwdejhgtczyzprg8ug9dh2hnft5lc7ly92m9su7p6279deaaz2p8ua928ml0n2yqcyqqqqqqggrf8s8