M 310 - M 386
Trios (which may include on or more string instruments)

M 310 - M 314
Two strings and piano

M 349 - M 353
String trios

M 410 - M 486
Quartets (which may include on or mor string instruments)

M 450 - M 454
String quartets

M 460 - M 464
Quartets for strings and winds

M 510 - M 514
Four strings and piano

M 550 - M 554
String quintets

M 60 - M 654
String sextets

M 750 - M 754
String septets

M 850 - M 854
String octets

M 950 - M 954
String nonets