There is no sense in doing this. The gear ratio you get is not actually about the number of teeth, it's the ratio of diameters of the chainring and cog. So a 44 in front and 22 in back with a 1/2" chain is equivalent to a 22 in front and an 11 in back with a 1" chain. No advantage to the 1" pitch. And you cannot get an cog that is equivalent in size to a 19 because 19 is not evenly divisible by 2.