The following two lines should have the same content:
a
b
a
b
a
b
a
b
a
b
a
b
a
b
a
b
a
b
a
b
1-
a
b
a
b
a
b
2-
a
b
a
b
a
b
a
b
2.0-
a
b
a
b
2.0.1-
a
b