ssssss    yy    yy    ssssss    rr  rrr     eeeeee    vv      vv
 ss    ss   yy    yy   ss    ss   rrr   rr   ee    ee   vv      vv
 ss         yy    yy   ss         rr         eeeeeeee    vv    vv
  ssssss    yy    yy    ssssss    rr         ee           vv  vv
       ss   yy    yy         ss   rr         ee           vv  vv
 ss    ss   yy   yy    ss    ss   rr         ee    ee      vvvv
  ssssss     yyyyy      ssssss    rr          eeeeee        vv
               yy
         yyyyyyy