i think you could make this with tunisian. when it gets the the split, you could keep working half the stitches until both halves are long enough and then start stitching across the entire piece again at the other end.
Heirloom Crochet - Raised Stitch with Crossed Trebles. This is the pattern Ethan wants, now to figure out how to make the raised trebles one color, and the background another
Knitted ballerina flats or house slippers ~~ Деревенские тапочки