css - Bootstrap - Wrapping Columns Around Larger Column -

i know how standard columns , such in bootstrap. however, have haven't encountered yet , can't seem google answer. maybe don't know call it, hence why can't find it.

i have bunch of boxes, 1 large box on right, , more of smaller boxes under it. think confused because have row, 4 columns 3 wide, larger column needs take multiple rows..

here quick example made in paint:

the smaller boxes kind of thumbnails portfolio, same size. larger box twitter news feed, div twitter provides place newsfeed on site.

i not sure if should create 2 sections (top half , bottom half) or how approach this. thought making top section 2 columns, in 1st have split 2 more (6 , 6). separate section below normal.

however, can add image paragraph , have text wrap around image. wanting same thing, twitter newsfeed , columns..

i can add code once approach if still stuck.

i tried put set of rows , cols inside 1st column, broke spacing between columns mean adding css fix spacing.

hoping has done this, or can see image, how approach this.

try this:

<div class="container-fluid">     <div class="row">         <div class="col-sm-6">             row1-col1             <div class="row">                 <div class="col-sm-6">                     sub-row1-sub-col1                 </div>                 <div class="col-sm-6">                     sub-row1-sub-col2                 </div>             </div>             <div class="row">                 <div class="col-sm-6">                     sub-row2-sub-col1                 </div>                 <div class="col-sm-6">                     sub-row2-sub-col2                 </div>             </div>             <div class="row">                 <div class="col-sm-6">                     sub-row3-sub-col1                 </div>                 <div class="col-sm-6">                     sub-row3-sub-col2                 </div>             </div>         </div>         <div class="col-sm-6">             row1-col2         </div>     </div>     <div class="row">         <div class="col-sm-3">             row2-col1         </div>         <div class="col-sm-3">             row2-col2         </div>         <div class="col-sm-3">             row2-col3         </div>         <div class="col-sm-3">             row2-col4         </div>     </div>     <div class="row">         <div class="col-sm-3">             row3-col1         </div>         <div class="col-sm-3">             row3-col2         </div>         <div class="col-sm-3">             row3-col3         </div>         <div class="col-sm-3">             row3-col4         </div>     </div> </div>