Iterating Different Characters by line

Question

it looks like this
x
/ \
x k x
/ | \
x k x k x
/ | \
x k x k x k x
/ | \

and so forth. please.
until there are 21 x and k's in the last row. kindly help

Answer 1

If you don't mind, I also made a script in Python for that :)
https://code.sololearn.com/cvLJXU4IetsT/?ref=app

Answer 2

i have posted the solution in my profile. check the code section. the code is named as ctree. 👍