I was just wondering how to play the notes below F sharp. I know how to do F, sort of but could someone please refresh my memory or correct them.

f 100
e 110
e flat 011
d 101
d flat 111
c 000
b 010

0= not pressed, 1= pressed

I always played the f as 111 with the second pressed 1.2 way down

you just use your lip to lip down to the nex partial