at right angles to the selvage referring to fig1 there is shown a stitch diagram in which each row labeled 101 117 represents a row of knitting each using a different yarn on one pass of the yarn carrier for a three system machine a three system machine has a cam box which can carry up to three yarn carriers on a pass across the needle beds in each row such as row 101 the upper line of small dots represents individual needles on the rear bed of the knitting machine and the lower row of dots represents the from bed of the knitting machine in the terminology used herein the front face of the fabric is knitted on the from bed of needles and the rear face is knitted on the rear needle bed the yarn is represented by loops and interconnecting cross links the zones x and z outside of the lines a and b represent a double jersey structure knitted from a chenille yarn according to european patent application ep a 0627 516 zone y between the lines a and b is where the course wise line of weakness 11 is formed on the first pass of the yarn carriers on the knitting machine from right to left a chenille yarn 21 is knitted on all needles on the front bed there is no difference between the zones a first contrast yarn 22 is knitted.