When the expressions to be combined are small, write a cascade of sequential combinators all on the same line.

F >x> G >y> H

When the expressions to be combined are individually long enough to take up a full line, write one expression per line; each line ends with the combinator which binds the publications produced by that line.

long expression  >x>  
long expression  >y> 
long expression

For very long expressions, or expressions that span multiple lines, write the combinators on separate lines, indented, between each expression.

very long expression 
  >x>  
very long expression 
  >y> 
very long expression