Given that the Z clue (5,8) can only go in one place, it means that the L clue (4,6) cannot be fitted in the grid as the 8th letter is N but should be D and the same goes for the other 10-letter light?
The online version was screwed up - it has been replaced with a message and a link to the PDF version which you can print or as in my case 'cos my printer aint working draw a rough grid on a piece of paper. The Y & Z clues are in the PDF.