input segments
47/10 27/10 77/10 72/10
38/10 3/10 22/10 84/10
9/10 19/10 89/10 29/10

the output
Polyline number 1:
    (4.5:2.5)
    (7.5:7.5)

Polyline number 2:
    (3.5:0.5)
    (3.5:2.5)
    (2.5:8.5)

Polyline number 3:
    (0.5:1.5)
    (3.5:2.5)
    (4.5:2.5)
    (8.5:2.5)


testing sr
Polyline number 1:
    (4.5:2.5)
    (7.5:7.5)

Polyline number 2:
    (3.5:0.5)
    (3.5:2.5)
    (2.5:8.5)

Polyline number 3:
    (0.5:1.5)
    (3.5:2.5)
    (4.5:2.5)
    (8.5:2.5)

