Here's a fun twist to the classic: "Create a diamond of astrics 5 astrics wide" problem.
Note: styles are as follows
Style: 0
###i###
##thi##
#isthi#
Style: 1
###t###
##thi##
#thist#
Style: 2
thisthi
#isthi#
##thi##
###i###
Style: 3
thisthi
#thist#
##thi##
###t###