Unknown contractions and grammar in harsh language using 置いてくもん


I'm playing a game and I came across a dialog where a person says:

[code]

    置いてくもん置いてきゃ
    許してやらなくもないぜオラァ！
    
[/code]

And I'm having a difficult time understanding how this grammar was formed. I
am mainly lost on the `置いてくもん置いてきゃ` part. I do not understand what `置いてくもん` is
at all and it seems like `置いてきゃ` was formed by doing:

[code]

    置いていく　→　置いていけば　→　置いていきゃ　→　置いてきゃ
    
    If you leave...
    
[/code]

So what is and how is the `置いてくもん` part formed?

My translation overall is something like:

[code]

    You better leave... If you leave...
    Well then perhaps we can forgive you!
    
[/code]

Background context of the situation:

During this part of the game a cutscene is played where you are running down a
path and ram into a group of 3 people. You knock them all down to the ground
in the process. Once they get up, they show their anger and say the above.
Ultimately the game puts you into a fight with them where you must beat them
up.




> 置いてくもん置いてきゃ

It's a colloquial, contracted pronunciation of

> 置いていくものを置いていけば  
>  "If you leave what you (are supposed to) leave"

It consists of:

置いていく(置いて行く) ⇒ 置いてく  
もの(物) ⇒ もん  
を is left out  
置いていけば(置いて行けば) ⇒ 置いてきゃ

置いてく is a relative clause that modifies もん.  
［置いてく］もん literally means "things [that you leave]".




> 置いてくもん置いてきゃ

It's a colloquial, contracted pronunciation of

> 置いていくものを置いていけば  
>  "If you leave what you (are supposed to) leave"

It consists of:

置いていく(置いて行く) ⇒ 置いてく  
もの(物) ⇒ もん  
を is left out  
置いていけば(置いて行けば) ⇒ 置いてきゃ

置いてく is a relative clause that modifies もん.  
［置いてく］もん literally means "things [that you leave]".

