... 1,2,3 respectively. J can't 5,6,7 since there ... the left of J? We can't put S on 2 because ... things before it and we can't put Y on 2 because ... H; H and J also can't go next to each other ... A, D, E. G can't be 4th since J is ... 3rd [BYE A]. S can't be 2nd since Q is ...