here is a list of natural valve combinations
G = 1,3
a = 1,2
b = 2
c = open
d = 1,3
e = 1,2
f = 1
g = open
a = 1,2
b = 2
c = open
d = 1
e = open
f = 1
g = open
to get past the various notes you need to blow harder and make you lips tighter or looser accordingly
trumpets rock
