0 if 0 else 1 then . cr
1 if 1 else 0 then . cr

0 0 if 0 else if 0 else 1 then then . cr
0 1 if if 0 else 1 then else 0 then . cr

1 0 if 0 else if 1 else 0 then then . cr
1 1 if if 1 else 0 then else 0 then . cr