Which buses are powered by what generators when certain generator(s) fail?

Question 1

GEN 1 FAIL

Answer 1

GEN 2 - AC1, AC2
GEN 3 - ENV1, L NAC IPS
GEN 4 - ENV2, R NAC IPS

Question 2

GEN 2 FAIL

Answer 2

GEN 1 - AC1, AC2
GEN 3 - ENV1, L NAC IPS
GEN 4 - ENV2, R NAC IPS

Question 3

GEN 3 FAIL

Answer 3

GEN 1 - AC1, ENV1
GEN 2 - AC2
GEN 4 - ENV 2, L/R NAC IPS

Question 4

GEN 4 FAIL

Answer 4

GEN 1 - AC1
GEN 2 - AC2, ANV2
GEN 3 - ENV1, L/R NAC IPS

Question 5

GEN 1/2 FAIL

Answer 5

GEN 3 - AC1, ENV1, L NAC IPS
GEN 4 - AC2, ENV2, R NAC IPS

Question 6

GEN 1/3 FAIL

Answer 6

GEN 2 - AC1, AC2, ENV1
GEN 4 - ENV2, L/R NAC IPS

Question 7

GEN 1/4 FAIL

Answer 7

GEN 2 - AC1, AC2, ENV2
GEN 3 - ENV1, L/R NAC IPS

Question 8

GEN 2/3 FAIL

Answer 8

GEN 1 - AC1, AC2, ENV1
GEN 4 - ENV2, L/R NAC IPS

Question 9

GEN 2/4 FAIL

Answer 9

GEN 1 - AC1, AC2, ENV2
GEN 3 - L/R NAC IPS

Question 10

GEN 3/4 FAIL

Answer 10

GEN 1 - AC1, ENV1
GEN 2 - AC2, ENV2
NAC IPS LOST

Question 11

GEN 1/2/3 FAIL

Answer 11

GEN 4 - AC1, AC2, ENV1, ENV2, L/R NAC IPS

Question 12

GEN 1/2/4 FAIL

Answer 12

GEN 3 - AC1, AC2, ENV1, ENV2, L/R NAC IPS

Question 13

GEN 1/3/4 FAIL

Answer 13

GEN 2 - AC1, AC2, ENV1, ENV2
NAC IPS LOST

Question 14

GEN 2/3/4 FAIL

Answer 14

GEN 1 - AC1, AC2, ENV1, ENV2
NAC IPS LOST