.ino coding requirement

I need some Arduino coding doing for some WS2812B led strips running from 3 data pins of an Arduino UNO.

Pin 1:
Basically flowing led's in a Knightrider style that flow in red along a strip of approximately 100 pixels and then backwards in blue pixels. These then need to run in reverse (blue and then backwards in red).

Pin 2:
In sync with pin 1, I need a pulsating strip in red of around 10 pixels. And when the colours reverse pulsating in blue

Pin 3:
In sync with pin 1, I need a pulsating strip in blue of around 10 pixels. And when the colours reverse pulsating in red

Is this something you could help with?

I've attached a 'storyboard' showing the sequencing. Please note the long dashed lines signify the pins 2 & 3. Some very basic tests I've done can be seen here:

https://we.tl/t-8zJIsiultz

I appreciate you may need a little more info so please get in touch.

Best wishes,