28 24 4 600
flights
2 3 7 5
5 8 21 23
13 23 0 0
13 10 0 22
GGAAABBAAAABACCGGGGGGGGGAGGG
ABBBBBABABBBBCCGGFFFGGGFFFGG
AABAABABBBABBCCFFFGFFGGFFGGG
BABABABBBBBABCCGGFGGFFGGFGGG
BABABBAABABBACCGGFFGGFGGFFGG
BABAABBBBBABBCCGGGGFFFGGFFGG
AABABBAABBABBCCGGGFFFFFFFFFG
BAAAAAABBBBBACCGGFFGFFFFFGFG
BABAABBABBBBBCCGFFGGFFFGFGFG
AABBABBBAABAACCZFFGGGGFFFFGG
AAAABABBBAABA]CGGGGGGGGGGGGG
CCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCCAAAAAAAAAAAAA
CGGGGGGGGGGGCCCDDDDDDDDDDDDA
CGGGGGFGGGGGCCCDDDDDDDDDDDDA
CGGGGFFFGGGGCCCDDDDDYDDDDDDA
CGGGFFFFFGGGCCCDDDDDAADDAAAA
CGGGGFFFGGGGCCCDDDDYRSDDADDD
CGGGGGFGGGGGCCCDDDDDUTDDCDDD
CGGGGGFGGGGGCCCDDDDDUTDDCDAA
CCCGGGFGGGGGCCCDDDDDTUDFCFDD
DFCGGG]GGGGGCCCDDDDDTUDFGFGG
GFCCCCCCCCCCCCCCDDDDQQDFFFGG
CCCCCCCCCCHCC]_]CCCCCCCCCCC\
