String Quartet No.12 in D-flat major,op.133 String quartet No.12 in D flat major, op.133 String quartet No.13 in B-flat major, op.130 String quartet no. 13 in B-flat major, op. 130 String quartet no. 12 in E-flat major, op. 127 String Quartet No.10 in A-flat major,op.118 String quartet No. 12 in E-flat major op. 127 String Quartet No.13 in B flat major,Op.130 String Quartet No.13 in B-flat minor,op.138 String Quartet No.9 in E-flat major,op.117