html - weird formatting result in rails app -


i have following partial display stuff. however, page renders 1 element on first row, 3 on next, etc. last row has 2 elements. essentially, there shift. reason happening?

<% @albums.each_with_index |album, i| %>      <%if i==0 || i==3 || i==6 || i==9 %>     <div class="row">         <div class="col-lg-4">              <% if album["image"][2]["#text"] != nil %>             <img class="img-circle" src="<%= album["image"][2]["#text"] %>"  width="140" height="140">             <% else %>             <img class="img-circle" src="<%= image_path("rec.png") %>"  width="140" height="140">             <% end %>               <h2><%= album["name"] %></h2>             <p>                 <strong>by: </strong><%= album["artist"] %><br>                 <div>                 <%= form_tag(:action => "add_album") %>                 <%= hidden_field_tag 'album_name', album["name"] %>                 <%= hidden_field_tag 'album_artist', album["artist"] %>                 <%= hidden_field_tag 'album_id', album["id"] %>                 <%= hidden_field_tag 'album_image', album["image"][2]["#text"]%>                 <%= hidden_field_tag 'album_image_large', album["image"][3]["#text"] %>                 <%= submit_tag("add") %>                 <% end %>                 </div>             </p>         </div>     </div>      <%else%>     <div class="col-lg-4">          <% if album["image"][2]["#text"] != nil %>         <img class="img-circle" src="<%= album["image"][2]["#text"] %>"  width="140" height="140">         <% else %>         <img class="img-circle" src="<%= image_path("rec.png") %>"  width="140" height="140">         <% end %>                 <h2><%= album["name"] %></h2>         <p>             <strong>by: </strong><%= album["artist"] %><br>             <div>                 <%= form_tag(:action => "add_album") %>                 <%= hidden_field_tag 'album_name', album["name"] %>                 <%= hidden_field_tag 'album_artist', album["artist"] %>                 <%= hidden_field_tag 'album_id', album["id"] %>                 <%= hidden_field_tag 'album_image', album["image"][2]["#text"]%>                 <%= hidden_field_tag 'album_image_large', album["image"][3]["#text"] %>                 <%= submit_tag("add") %>                 <% end %>             </div>         </p>     </div>     <%end%>   <% end %>


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