@Tbl
    rule { yes }
    indent { ctr }
    indentvertical { ctr }
{
@Row
    paint { lightgrey }
    format { @Cell @B A | @Cell width { 5c } @B B | @Cell width { 5c } @B C | @Cell width { 5c } @B D }
    A { } B { 1-2 } C { 3-5 } D { 6+ }
@Row
    format { @Cell @B A | @Cell width { 5c } @B B | @Cell width { 5c } @B C | @StartVSpan @Cell width { 5c } @B D }
    A { @B sym } B { @Sym emptyset } C { @Disruptedif @I {if no Depth} } D { @Disrupted }
@Row
    format { @Cell @B A | @Cell width { 5c } @B B | @StartVSpan @Cell width { 5c } @B C | @VSpan }
    A { @B color } B { @Disruptedif @I {if no Depth} } C { @Disrupted }
@Row
    format { @Cell @B A | @Cell width { 5c } @B B | @VSpan | @Cell width { 5c } @B D }
    A { @B color + @B sym} B { @Disrupted } D { @Disrupted - @Depth }
#@Rowb A { @Sym emptyset } B {} C {} D {}
}