This list of available channelmodes:

a: protect, the user is kick protected
b: ban mask
c: no colors are accepted
e: ban exception mask
h: halfop, a user allowed to mode a little, and kick
i: invite only channel
I: invite exception mask
k: channel key, required on join
l: limit, number of maximum users allowed
m: moderated, only +uaohv users are allowed to talk
M: moderation based on hostmasks
n: no messages from outside
o: channel operator
O: oper only channel
p: private channel, hidden in /list
q: quiet channel, only used in server owned channels
r: registered channel
R: a channel which only can be used by registered nicks
s: secret channel, hidden in /whois
t: /topic only by ops
T: /topic only by protected
u: channel owner, kick and deop protected
v: voiced users
x: hide ops in channel
z: a channelname, from which no user can join this channel
