R=range(-23,24) for a in R: s='' for b in R:B=a*b!=0;x=abs(a**-~B+b**-~B);s+=" [ ]"[x%4+2*B>2>~-2**x%x::2] print s

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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