Critical Inputs
===============
A->B: Hello!
A->C: Hi!
B->A: Hehe
B->D: Hei!
D->B: How are you?
A->C: Hi???
A->C: Are you there?
B->D: Hehehei!
D->B: What does hehehei mean?
F->E: I want to hehehehehe yah.

Ab -> bd: hehe

A->B: Hello!
A->C: Hi!
B->A: Hehe
B->D: Hei!
D->B: How are you?
A->C: Hi???
A->C: Are you there?
B->D: Hehehei!
D->B: What does hehehei mean?
F->E: I want to hehehehehe yah.
E->F: hehe.

A->B: Hello!
A->C: Hi!
B->A: Hehe
B->D: Hei!
D->B: How are you?
A->C: Hi???
A->C: Are you there?
B->D: Hehehei!
D->B: What does hehehei mean?
F->E: I want to hehehehehe yah.
G->H: hehe.

A->B: Hello!
B->C: Hi!
C->D: Heheh
E->D: Hei!
D->B: How are you?
F->C: Hi???

A->B: Hello!
B->C: Hi!
C->D: Hehe.
E->D: Hei!
D->B: How are you?
F->C: Hi???

A->B: Hello!
B->C: Hi!
C->D: Hehe.
E->D: Hehe!
D->B: How are you?
F->C: Hi???


OutPuts
=======

50%
100%
50%
60%
0%
17%
33%