Usage of ethereum-wallet-generator:
  -n          int    set number of generate times (not number of result wallets) (set number to -1 for Infinite loop ∞, default 10)
  -limit      int    set limit number of result wallets. stop generate when result of vanity wallets reach the limit (set number to 0 for no limit, default 0)
  -db         string set sqlite output file name eg. wallets.db (db file will create in `/db` folder)
  -c          int    set concurrency value (default 1)
  -bit        int    set number of entropy bits [128 for 12 words, 256 for 24 words] (default 128)
  -mode       int    set mode of wallet generator [1: normal mode, 2: only private key mode]
  -strict     bool   strict contains mode, resolve only the addresses that contain all the given letters (required contains to use)
  -contains   string show only result that contained with the given letters (support for multiple characters)
  -prefix     string show only result that prefix was matched with the given letters  (support for single character)
  -suffix     string show only result that suffix was matched with the given letters (support for single character)
  -regex      string show only result that was ma