xmodmap \
-e 'keysym a = a A adiaeresis' \
-e 'keysym o = o O odiaeresis' \
-e 'keysym u = u U udiaeresis' \
-e 'keysym e = e E eacute' \
-e 'keysym s = s S ssharp' \
-e 'keysym 0x1005FF78 = Super_L' \
-e 'keysym 0x1005FF77 = Super_R' \
-e 'keysym 0x1005FF79 = Hyper_L' \
-e 'keysym 0x1005FF76 = Hyper_R'