I played chinese jump rope back in the 60's. I, too, am trying to remember the chant we used. The only thing I can remember is "on 'em, in 'em, out'em, twist 'em, then "out 'em. Next you caught the first rope with both feet and crossed the second rope so that both feet are now inside the ropes and moved feet to"criss cross apple-sauce, evy, ivy, over", then "criss-cross apple sauce, evy, ivy, out. You somehow ended by taking one foot back and forth across the first rope then grabbing the second rope and letting it go, which was called "bow and arrow".