C13332313311211113313331333133313331323321333133313231333131133132211312121   >>    C1333231331121111331333133313331333132332133313331323133313113313221131212   <<    C13332313311211113313331333133313331323321333133313231333131133132211312123   >>      C13332313311211113313331333133313331323321333133313231333131133132211312122   >>