Half Brioche stitch pattern - Purl Version

Knitting series Basics and Stitches
Half Brioche stitch pattern - Purl Version
worked over multiple of 6 + 4 + edge stitches
R1 & R 3 : (WS) : Purl
R2: K1 , * K1B, K1, ; Rep from * to end.
R4: K1B, * K1 , K1B; ; Rep from * to end.
Pattern : Rep these 4 rows.
Note: in the demo, first 3 and last 3 are knit stitches row after row (edge stitches)