C12121321333132233131333131133131211113313133121111112232212331   >>    C1212132133313223313133313113313121111331313312111111223221233   <<    C12121321333132233131333131133131211113313133121111112232212333   >>      C12121321333132233131333131133131211113313133121111112232212332   >>