P 1-2(i1)

P 1-2(i2)

P 1-2(i3)

P 1-2(i4)

P 1-2(i5)

P 2-3(i1)

P 2-3(i2)

P 2-3(i3)

P 3-4(i1)

P 3-4(i2)

P 3-4(i3)

P 4-5(i1)

P 4-5(i2)

P 4-5(i3)

P 5-6(i1)

P 5-6(i2)

P 5-6(i3)

P 5-6(i4)

P 6-7(i1)

P 6-7(i2)

P 7-8(i1)

P 8-9(i1)

P 8-9(i2)

P 9-10(i1)

P 10-11(i1)

P 10-11(i2)

P 11-12(i1)

P 11-12(i2)

P 11-12(i3)