I : I____I
II : I____I____I____I____I__I__I
9 9 total 147 timbre
III : I____I__I
9
147 - (3 x 9) = 147 - 27 = 120
120 : 6 = 20 (un segment)
I = 20 timbre
II = 4 x 20 + 2 x 9 = 80 + 18 = 98 timbre
III = 20 + 9 = 29 timbre
Verificare: I + II + III = 20 + 98 + 29 = 147 timbre