20 20 93295188 1
AABBAABBAABBAABBAABB
ABBAABBAABBAABBAABBA
BBAABBAABBAABBAABBAA
BAABBAABBAABBAABBAAB
AABBAABBAABBAABBAABB
ABBAABBAABBAABBAABBA
BBAABBAABBAABBAABBAA
BAABBAABBAABBAABBAAB
AABBAABBAABBAABBAABB
ABBAABBAABBAABBAABBA
BBAABBAABBAABBAABBAA
BAABBAABBAABBAABBAAB
AABBAABBAABBAABBAABB
ABBAABBAABBAABBAABBA
BBAABBAABBAABBAABBAA
BAABBAABBAABBAABBAAB
AABBAABBAABBAABBAABB
ABBAABBAABBAABBAABBA
BBAABBAABBAABBAABBAA
BAABBAABBAABBAABBAAB