At every step, they are required to evade the traps laid down enroute.
Why - because little es and s are very sensitive to touch. I haven't developed a master list, but I have a feeling the bad adaptations outnumber the good by as much as 2-to-1. http://Www.crebig.com/board/bbs/board.php?bo_table=free&wr_id=737934