14
EEEEEEEEEEEEEE
EAAAAADDDDDDDE
EDDDDDDBBBBBDE
EDBBBBBBCDDDDE
EDBFFFFFCDEEEE
EBBFBBGFCDDDDD
EBHHHBGFCCCCCD
EBBBBBGGIIIICD
IIIIIJJJIKKCCD
ILLLLJLLIMKCDD
ILNJJJLIIMKCDO
ILNNNLLIMMKCDO
ILLLLLIIMCCCDO
IIIIIIIMMCOOOO