Twisted 1 x 1 Ribbing (even number of stitches):

Row 1 (RS): *Knit 1 tbl, purl 1; repeat to end.

Row 2 (WS): *Knit 1, purl 1 tbl; repeat to end.

Note: When working Twisted 1x1 Ribbing in the round, ensure an even number of stitches, and work Row 1 on all stitches for all rounds.

About Twisted 1x1 Ribbing (even stitch count): Twisted 1x1 ribbing, with a definition that forces the stitch count to be even.