"However, De Vos (2005:59) points out that try and may not be preceded by both: " [example] "John will both try and kill mosquitos."

Then the next sentence has "try and is available only when both try and the verb following and are uninflected". (only when "both try and") I know the italicization of "try" and "and" makes it a different thing grammatically, just thought it was amusing.