In each of the following pairs, the blue and orange bars must have equal lengths.

A​​​​B

A​​​​B

A​​​​B

A​​​​B

AB

AB

AB

AB

A‌‌‌‌B

A‌‌‌‌B

A‌‌‌‌B

A‌‌‌‌B

A‍‍‍‍B

A‍‍‍‍B

A‍‍‍‍B

A‍‍‍‍B