However , 1050 free nonominoes ( all but 235 ) do admit tilings ; of the tiling nonominoes , all .
Two of nonominoes form a patch of at least one tile satisfying the Conway criterion , the two exceptions shown to the right .
However , 1050 free nonominoes ( all but 235 ) do admit tilings ; of the tiling nonominoes , all but two of them form a patch of at least one tile satisfying the Conway criterion , the two exceptions shown to the right .