Answer:
GGUAGACCUUGUGAUGAUUUGU.
I an not sure if the I is supposed to be there. However I am going to answer the rest of the strand and hopefully you can either translate the I or it was a typo.
Explanation:
CCATCTGGAACACTACITAAACA
C->G
C->G
A->U
T->A
C->G
T->A
G->C
G->C
A->U
A->U
C->G
A->U
C->G
T->A
A->U
C->G
I->Typo or you will have to translate.
T->A
A->U
A->U
A->U
C->G
A->U