Input (grade 9): Its main tributaries are the Brenno in the Blenio valley and the Moesa in the Mesolcina valley in GraubÃ 1\/4 nden.
Output (grade 9): Its main tributaries are the Brenno in the Blenio Valley and the Moesa in the Mesolcina Valley in GraubÃ 1\/4 nden.