Bip39 tool github https://www.plurk.com/p/3hf2syltjx The order from the mnemonic phrase matters. If you mess up the order then You can not Get better your wallet. Your cash might be lost forever. Make sure you have an appropriate backup. For words that have only 3 letters, there is not any 4th https://tornadosocial.com/story5817823/bip39-word-generator-5-tips-about-bip39-checksum-you-can-use-today-https-cutt-ly-uryc5rw7