C1111233131211111211113313331333133313311221333131133131211331323223311   >>    C111123313121111121111331333133313331331122133313113313121133132322331   <<    C1111233131211111211113313331333133313311221333131133131211331323223313   >>      C1111233131211111211113313331333133313311221333131133131211331323223312   >>