id_father'>father</span><span class='comma'>,</span> <span class='id identifier rubyid_strings'>strings</span><span class='comma'>,</span> <span class='id identifier rubyid_oi'>oi</span><span class='op'>=</span><span class='kw'>nil</span><span class='comma'>,</span> <span class='id identifier rubyid_ci'>ci</span><span class='op'>=</span><span class='kw'>nil</span><span class='comma'>,</span> <span class='id identifier rubyid_ptr'>ptr</span><span class='op'>=</span><span class='kw'>nil</span><span class='rpa