C12121321333132233131333131133131211113313113313113313231333211221   >>    C1212132133313223313133313113313121111331311331311331323133321122   <<    C12121321333132233131333131133131211113313113313113313231333211223   >>      C12121321333132233131333131133131211113313113313113313231333211222   >>