Codeigniter HMVC子模块

Question

Cannot use same module name in hmvc architecture with code igniter.

/application/modules/admin/login/controllers/
/application/modules/admin/login/models/
/application/modules/admin/login/views/

/application/modules/front/login/controllers/
/application/modules/front/login/models/
/application/modules/front/login/views/

Currently in config if i set

$config['modules_locations'] = array(
    APPPATH.'modules/admin/' => '../modules/front/',
    APPPATH.'modules/front/' => '../modules/admin/',
);

It will refer to the front login module. Similarly if i use below config it will refer to admin login module.

$config['modules_locations'] = array(
    APPPATH.'modules/admin/' => '../modules/admin/',
    APPPATH.'modules/front/' => '../modules/front/',
);

Please give a solution such that i can use login module in admin as well as frontend, without renaming any module.