bbpb= bbpw= bbnb= bbnw= bbbb= bbbw= bbrb= bbrw= bbqb= bbqw= bbkb= bbkw= bemb= bemw= bwkb= bwkw= bwqb= bwqw= bwrb= bwrw= bwbb= bwbw= bwnb= bwnw= bwpb= bwpw=