kLeftTop
fCorners[Corner::kLeftTop].Trace();
{ return &fCorners[Corner::kLeftTop]; }
if (_FindFreeAreaInGroup(group, Corner::kLeftTop))
case Corner::kLeftTop:
case Corner::kLeftTop:
case Corner::kLeftTop:
fFreeAreaTop ? Corner::kLeftBottom : Corner::kLeftTop,
fFreeAreaLeft ? Corner::kRightTop : Corner::kLeftTop,