BACBB ABABC ACABA AABBC
DBCAA AABAB CBBCC
CACCB AADBD CDADD BCBAB
DCDC BCAD BAA BBCA
Research Kinds possible low exposed Materials development space Developing
BACBB ABABC ACABA AABBC
DBCAA AABAB CBBCC
CACCB AADBD CDADD BCBAB
DCDC BCAD BAA BBCA
Research Kinds possible low exposed Materials development space Developing