Foundation Extended Single Crochet (fesc)

First Foundation Extended Single Crochet: Chain 2, insert your hook into the second chain from the hook and draw up a loop. Yarn over and pull through 1 loop (creating the bottom chain), yarn over and pull through 1 loop (creating the extension), yarn over and pull through the remaining 2 loops.

Subsequent Foundation Extended Single Crochets: Insert your hook into the bottom chain of the previous stitch, yarn over and draw up a loop. Yarn over and pull through 1 loop (bottom chain of stitch just made), yarn over and pull through 1 loop (creating the extension), yarn over and pull through the remaining 2 loops.