hint 
title 
make block-exit 3 4 21
make block-wood 5 4 21
make block-wood 9 4 21
make block-wood 13 4 21
make block-wood 17 4 21
make block-wood 21 4 21
make block-wood2 21 4 25
make block-wood2 21 4 29
make block-wood2 21 4 33
make block-wood2 21 4 37
make block-wood2 21 4 41
make block-exit_d 21 4 45
