Real Vim ninjas count every keystroke - do you?

Pick a challenge, fire up Vim, and show us what you got.

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$ gem install vimgolf
$ vimgolf setup
$ vimgolf put 9v0067401f2500000000061b

Change to ascending order

Change each line of numbers consistently from descending to ascending order.

Start file

10,9,8,7,6,5,4,3,2,1
Ten,Nine,Eight,Seven,Six,Five,Four,Three,Two,One
Tenth,Ninth,Eighth,Seventh,Sixth,Fifth,Fourth,Third,Second,First
X,IX,VIII,VII,VI,V,IV,III,II,I

End file

1,2,3,4,5,6,7,8,9,10
One,Two,Three,Four,Five,Six,Seven,Eight,Nine,Ten
First,Second,Third,Fourth,Fifth,Sixth,Seventh,Eighth,Ninth,Tenth
I,II,III,IV,V,VI,VII,VIII,IX,X

View Diff

1,4c1,4
< 10,9,8,7,6,5,4,3,2,1
< Ten,Nine,Eight,Seven,Six,Five,Four,Three,Two,One
< Tenth,Ninth,Eighth,Seventh,Sixth,Fifth,Fourth,Third,Second,First
< X,IX,VIII,VII,VI,V,IV,III,II,I
---
> 1,2,3,4,5,6,7,8,9,10
> One,Two,Three,Four,Five,Six,Seven,Eight,Nine,Ten
> First,Second,Third,Fourth,Fifth,Sixth,Seventh,Eighth,Ninth,Tenth
> I,II,III,IV,V,VI,VII,VIII,IX,X

Solutions by @PierreSenellart:

Created by: @maharba6 Tweet

109 active golfers, 448 entries

Solutions by @PierreSenellart: