JEF4ICZYKVMEKZJRIWPV27H7JVHPFMGNMPVDQX5V4ROF6UBPBQDQC
EHSDV6CTQRTUCXISCWCL32DDHLNENVUWOK6LL3B5NDW56QVYDNJQC
GVX7YSQYURPWFSUWVUAORZJTQBJURWWNBNUGEZYFAUMX3X5LSACQC
X6AJODURS3K7O6ZNPOJLXFKI73E7OBRJRMBL66UHBDKFZXK4F6RAC
crate_id = nil -- 2D array of lh*lw crate ids
crate_id = nil -- 2D array of lh*lw crate ids; only a debugging aid