In a code language, DOCUMENT is written as FRGUMWQH. How is PERCEIVE written in that language?

UHSCEHYL

(the letters are arranged as cross-wise)

So,

D +3 G

O +3 R

C +3 F

U +0 U

M +0 M

E +3 H

N +3 Q

T +3 W

Similarly,

P +3 S

E +3 H

R +3 U

C +0 C

E +0 E

I +3 L

V +3 Y

E +3 H

Thus, the answer will be UHSCEHYL if we arrange them as DOCUMENT to FRGUMWQH.