$ setxkbmap -print
xkb_keymap {
        xkb_keycodes  { include "xfree86+lenovo(z60m)+aliases(qwerty)"  };
        xkb_types     { include "complete"      };
        xkb_compat    { include "complete+ledcaps(group_lock)"  };
        xkb_symbols   { include "pc(pc105)+us+lenovo(z60m)+ru(winkeys):2+altwin(super_win)+group(caps_toggle)+level3(ralt_switch)+eurosign(e)"  };
        xkb_geometry  { include "lenovo(z60m)"  };
};

part of xbkcomp :0
...
    key <AD03> {
        type[group1]= "FOUR_LEVEL_SEMIALPHABETIC",
        type[group2]= "ALPHABETIC",
        symbols[Group1]= [               e,               E,        EuroSign,        NoSymbol ],
        symbols[Group2]= [      Cyrillic_u,      Cyrillic_U ]
    };
...