input segments
7/10 5/10 107/10 107/10
7/10 105/10 105/10 5/10
107/10 25/10 7/10 25/10
107/10 75/10 7/10 75/10

the output
Polyline number 1:
    (0.5:0.5)
    (2.5:2.5)
    (5.5:5.5)
    (7.5:7.5)
    (10.5:10.5)

Polyline number 2:
    (0.5:10.5)
    (3.5:7.5)
    (5.5:5.5)
    (8.5:2.5)
    (10.5:0.5)

Polyline number 3:
    (10.5:2.5)
    (8.5:2.5)
    (2.5:2.5)
    (0.5:2.5)

Polyline number 4:
    (10.5:7.5)
    (7.5:7.5)
    (3.5:7.5)
    (0.5:7.5)


testing sr
Polyline number 1:
    (0.5:0.5)
    (2.5:2.5)
    (5.5:5.5)
    (7.5:7.5)
    (10.5:10.5)

Polyline number 2:
    (0.5:10.5)
    (3.5:7.5)
    (5.5:5.5)
    (8.5:2.5)
    (10.5:0.5)

Polyline number 3:
    (10.5:2.5)
    (8.5:2.5)
    (2.5:2.5)
    (0.5:2.5)

Polyline number 4:
    (10.5:7.5)
    (7.5:7.5)
    (3.5:7.5)
    (0.5:7.5)

