C1111133313331323223313331333133313113313223313331333131231323221   >>    C111113331333132322331333133313331311331322331333133313123132322   <<    C1111133313331323223313331333133313113313223313331333131231323223   >>      C1111133313331323223313331333133313113313223313331333131231323222   >>