C1111133313331323223313331333133313331323131211113311221123132212131   >>    C111113331333132322331333133313331333132313121111331122112313221213   <<    C1111133313331323223313331333133313331323131211113311221123132212133   >>      C1111133313331323223313331333133313331323131211113311221123132212132   >>