Input (grade 9): Ber tree may be erect or wide-spreading, with gracefully drooping thorny branches, zigzag branch lets, thorn less or set with short, sharp straight or hooked spines.
Output (grade 11): It may be a bushy shrub 1-2 m high, or a tree 3-12 m tall; erect or wide-spreading, with gracefully drooping branches and downy, zigzag branchlets, with short, sharp straight or hooked spines.