34 whereas the second linear sub pattern are solid lines 36 referring to fig6 another embodiment of the present invention is shown in this case the first linear sub pattern are first dashed lines 38 whereas the second linear sub pattern are second dashed lines 40 that are visually distinct from first dashed lines 38 referring to fig7 another embodiment of the present invention is shown in this case there are three lines that make up the visual linear pattern a first linear sub pattern includes solid line 42 having a first colour whereas the second linear sub pattern includes solid lines 44 and 46 that are both of a second colour that is visually distinct from the first colour of line 42 in this manner an asymmetrical colour pattern is provided as a directional guide as so the machine direction of the carpet alternatively lines 42 44 and 46 can all be of different colours that are visually distinct from one another referring to fig8 yet another embodiment of the present invention is shown in this case there are three lines in an asymmetrical configuration a first linear sub pattern are lines 48 whereas a second linear sub pattern consists of lines 50 and 52 furthermore in this example the distance between lines 48 and 50 is greater than the distance between lines 50 and 52 although it should be obvious to a person skilled in the art that.