Bip39 first 4 letters https://www.empowher.com/user/4550298 Even though it utilizes BIP32 system it is possible to however import BIP39 seeds into Electrum wallet. Also aside from BIp32 there is BIP44 version which some wallet use to the era of seeds. Because of the cryptographic style of BIP-39, a weak passphrase does https://thesocialdelight.com/story6384967/bip39-bits-not-known-factual-statements-about-bip39-mnemonic-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw