Bip39 Deutsch. Regardless that it employs BIP32 system you may still import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 Variation which some wallet use to the technology of seeds. The tool will advise several options for the missing word along with the appropriate one https://thebookpage.com/story4150780/ledger-seed-phrase-generator-seed-phrase-generator-for-trust-wallet-an-overview