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-10B thanks to @Neil
s/./X&/g s/X([0-7])/ \1/g y/89ABCDEF/01234567/ s/[0[4-7]/X&/g s/X([0-3])/ \1&/g y/4567/0123/ s/[0-3][2367]/X&/g s/X([01])[0145]/ \1&/g y/012301234567/ X X X X/
Attempt This Online!Attempt This Online!
s/./X&/g s/X([0-7])/ \1/g y/89ABCDEF/01234567/ s/[0-7]/X&/g s/X([0-3])/ \1/g y/4567/0123/ s/[0-3]/X&/g s/X([01])/ \1/g y/0123/ X X/
Attempt This Online!
s/./X&/g s/X([0-7])/ \1/g y/89ABCDEF/01234567/ s/[4-7]/X&/g s/[0-3]/ &/g s/[2367]/X&/g s/[0145]/ &/g y/01234567/ X X X X/
