xmodmap:  up to 4 keys per modifier, (keycodes in parentheses):

shift       Shift_L (0x32),  Shift_R (0x3e)
lock
control     Caps_Lock (0x42),  Control_R (0x69)
mod1        Meta_L (0x40),  Meta_R (0x6c),  Meta_L (0xcd)
mod2        Num_Lock (0x4d)
mod3        Alt_R (0x25)
mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce)
mod5        ISO_Level3_Shift (0x5c),  Hyper_L (0x87),  Mode_switch (0xcb),  BadKey (0xcf)

xmodmap:  up to 4 keys per modifier, (keycodes in parentheses):

shift       Shift_L (0x32),  Shift_R (0x3e)
lock        Alt_R (0x25)
control     Caps_Lock (0x42),  Control_R (0x69)
mod1        Meta_L (0x40),  Meta_R (0x6c),  Meta_L (0xcd)
mod2        Num_Lock (0x4d)
mod3
mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce)
mod5        ISO_Level3_Shift (0x5c),  Hyper_L (0x87),  Mode_switch (0xcb),  BadKey (0xcf)

xmodmap:  up to 4 keys per modifier, (keycodes in parentheses):

shift       Shift_L (0x32),  Shift_R (0x3e)
lock        Caps_Lock (0x42)
control     Alt_R (0x25)
mod1        Meta_L (0x40),  Meta_R (0x6c),  Meta_L (0xcd)
mod2        Num_Lock (0x4d)
mod3
mod4        Super_L (0x85),  Super_R (0x86),  Super_L (0xce)
mod5        ISO_Level3_Shift (0x5c),  Hyper_L (0x87),  Mode_switch (0xcb),  BadKey (0xcf)

<pikhq_> wli: Brainfuck isn't hard, just moderately tedious.
* shapr has quit (Ping timeout: 265 seconds)
<pikhq_> Think of it as an absurdly minimal assembly language.
<Raynes> Masturbating with one finger isn't hard, just moderately tedious.
<copumpkin> there's a real machine with a similar assembly language
<copumpkin> from ages and ages ago
<wli> There are single-instruction machines.
<copumpkin> Raynes: depends on your gender
<Pseudonym> It's hard on the finger.
<Raynes> copumpkin: Good point.
<Raynes> Pseudonym: So is brainfuck.
<pikhq_> It's actually a pretty nice code generator target.
<Pseudonym> So generate brainfuck, yeah.
<copumpkin> or your privates, at least
<copumpkin> which aren't necessarily correlated with your gender
<Pseudonym> Well, it's the shape of the genitals and/or other erogenous zones which is the key, yeah.
<wli> I guess I could make some kind of noise about this but there is a TMI factor to consider.
<Pseudonym> Right.  It occurred to me that a foot fetishist, for example, might object.