flowchart TD
  allSides[ stroke all sides ];
  allSides2[|borders:ltrb| stroke all sides ];
  rbSides[|borders:rb| stroke right and bottom sides ];
  ltSides[|borders:lt| stroke left and top sides ];
  lrSides[|borders:lr| stroke left and right sides ];
  noSide[|borders:no| stroke no side ];
