Need to refer from first register variable to second variable using only the index number - ansible

Question

I have two register variables, I loop on the first one and I need to loop on the second using only the index number.
I put this {{y.results[0].stdout}} but of course it only stay on the first array.
I want to loop on register y the same as register x index number.
- shell: |
if [[ $(fdisk -l /dev/{{raw_prefix}}{{item}} | grep '/dev/{{raw_prefix}}{{item}}{{partition}}' | wc -l) = 0 ]]; then fdisk -l /dev/{{raw_prefix}}{{item}} | grep 'Disk /dev' | awk '{print $3}' ; fi
ignore_errors: true
register: x
with_items: "{{letters}}"
- shell: |
if [[ $(fdisk -l /dev/{{raw_prefix}}{{item}} | grep '/dev/{{raw_prefix}}{{item}}{{partition}}' | wc -l) = 0 ]]; then fdisk -l /dev/{{raw_prefix}}{{item}} | grep 'Disk /dev' | awk '{print $4}' ; fi
ignore_errors: true
register: y
with_items: "{{letters}}"
- shell: echo {{item.stdout}} - {{y.results[????].stdout}}
with_items: "{{x.results}}"
For example:
x[0].stdout=10 y[0].stdout=MB
x[1].stdout=5 y[1].stdout=GB
So the output should be:
10 - MB
5 - GB
Basically I'm creating a partitioning playbook so that I could determine a raw disk 10GB.

Answer 1

If you are just interested in the output change your if statement, use awk 'OFS=" - "; {print $3, $4}'. No need to register x and y. One task will provide the required output.
- shell: |
if [[ $(fdisk -l /dev/{{raw_prefix}}{{item}} | grep '/dev/{{raw_prefix}}{{item}}{{partition}}' | wc -l) = 0 ]]; then fdisk -l /dev/{{raw_prefix}}{{item}} | grep 'Disk /dev' | awk 'OFS=" - "; {print $3, $4}' ; fi
ignore_errors: true
with_items: "{{letters}}"

Answer 2

I know that but what I'm trying to do is to loop from sdb up to sdx, u don't know how many disk are there. So to capture all the 10 (awk $3) you have to fdisk -l (compatible with all version of redhat), so i need also to capture GB (awk $4). But I figured out that this is hard. So I can't do it with_items looping, I will do is to hard code it like,
shell: echo {{x.results[0].item.stdout}} - {{y.results[0].stdout}} >> {{pre_check_logs}}
shell: echo {{x.results[1].item.stdout}} - {{y.results[1].stdout}} >> {{pre_check_logs}}
By the way this is github,
https://github.com/rv-ansible/disk_mgnt.git