C12121321333132233131333131133131211113313113313113313231333133313331333211211   >>    C1212132133313223313133313113313121111331311331311331323133313331333133321121   <<    C12121321333132233131333131133131211113313113313113313231333133313331333211213   >>      C12121321333132233131333131133131211113313113313113313231333133313331333211212   >>