s[][16];main(i){for(;~scanf("%s%s",s,s+1);)for(i=0;i<8;sprintf(s-~i,"%s%s",s+i,s+i++))printf("%s%c",s+i,i<7?32:10);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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