Not_Tako has met A by himself
Not_Tako has met C through A
Not_Tako has met D through A
Not_Tako has met B by himself
Not_Tako has met E through B
A_01
C_03 D_04
B_02
E_05
Not_Tako has met A by himself
Not_Tako has met C through A
Not_Tako has met D through A
Not_Tako has met B by himself
Not_Tako has met E through B
Not_Tako
A_01 B_02
C_03 D_04 E_05
Congratulations! You've finished Not_Tako's annoying tasks!