What is SL1wyib?

Hi, I have never posted on a forum before so I do not know how to do this. I am trying to make a dish cloth called Mosaic Strip. The first row is K1, *Sl1wyib. Ki. Sl1wyib. K3. Rep from * to last 4 sts. (SL1wyib. K1) twice. The next row has SL1wyif. Could someone please explain to me what this means I have been searching for several hours to figure out how to do this. Thanks for any help someone can give me or tell me where to find instructions on how to do this. Thanks.

See my answer in the other thread