String quartet no. 6 in B flat, op. 18 no. 6 String Quartet No.6 in B flat,Op.18 No.6 String Quartet No.6 in B flat,Op.18 String quartet no. 4 in C minor, op. 18 no. 4 String Quartet no.1 in C minor,op.51 no.1 String Quartet no.2 in A minor,op.51 no.2 String quartet No.2 in G, op.18 No.2 String quartet no. 12 in E flat, op. 127 String quartet in B flat op. 33 no. 4 String quartet no. 1 in F, op. 18 no. 1