Correct

串供

/ chuàngòng / 
Strokes

Definition

to collude to fabricate a story

Example

As a Verb

act in collusion/collaboration to make each other's confessions tally; collude/collaborate to make each other's confessions tally

1
Tāmen
他们
xiānghù
相互
chuàn
串
gòng
供
  
,
qǐtú
企图
tuīfān
推翻
yuángòng
原供
cí
词
  
。

They were in collusion and attempted to retract their testimony.