You can use a rule file, see : https://hashcat.net/wiki/doku.php?id=rule_based_attack
Also note that combination attack is different between oclHashcat and hashcat, in oclHashcat it combines 2 wordlists, in hashcat it combines each word of a single wordlist.
Also note that combination attack is different between oclHashcat and hashcat, in oclHashcat it combines 2 wordlists, in hashcat it combines each word of a single wordlist.