0 -> Tn
Ts -> Tn
Tn -> 0
0 -> Tn
0 -> Ts
Ts -> 0
Ts -> 0
0 -> M1
M1 -> 0
M1 -> M2
M2 -> M1
0 -> M2
M2 -> 0
0 -> Th1
Th1 -> 0
0 -> Th1
0 -> Th2
Th2 -> 0
0 -> Th2