C1111133313331323223313331333133313331333131211113313331311223223321   >>    C111113331333132322331333133313331333133313121111331333131122322332   <<    C1111133313331323223313331333133313331333131211113313331311223223323   >>      C1111133313331323223313331333133313331333131211113313331311223223322   >>