title: XRPL signing transaction, stuck at getting xrpl wallet from secret numbers
body: <p>I have 6 digits 8 rows secret numbers.
  How to convert/use my secret numbers with xrpl.Wallet.fromMnemonic or xrpl.Wallet.fromSecret method?</p>
  <pre><code>const xrpl = require(&quot;xrpl&quot;)
  const PUBLIC_SERVER = &quot;wss://xrplcluster.com/&quot;
  const client = new xrpl.Client(PUBLIC_SERVER)
  await client.connect()
  const wallet = xrpl.Wallet.fromMnemonic('A:112121 B:222222 C:333333 D:444444 E:555555 F:656565 G:156545 H:454545')
  console.log(wallet) 
  ......
  </code></pre>