How to show multiple user journeys or journey-options in a menu?

I have a menu that depicts a list of Tasks (say 1 to 10).

Each task can be done in 2 ways: option A & B.

Option A - by following the mentioned sequences of steps 1>2>3>4>5

Option B - by following the mentioned sequences of steps 1.1>1.2>2>3>4>5

Now, I can create the sub-menu for each menu-item (Task) in 2 ways - either for option A or for option B - as shown in the attached image.

But the Problem is: I have to show both options A and B to the user.

So, the Question is: How do I show both the options in a single menu?