def p_builtin_variable(p):
    """
    variable : BUILTIN NAME
    variable : BUILTIN COUNT NAME
    """
    if len(p) == 3:
        p[0] = '_BUILTIN', (p[2], p[1])
    elif len(p) == 4:
        p[0] = '_BUILTIN', (p[3], str(p[2]) + p[1])
