Replace function with conditions

Please see attached file.
I have data in A,B,C, and D column.

Based on following conditions i would like to fill column E with X, Y or Z

IF (C1>-2 AND <2) AND (D1="") THAN E1 DISPLAY "Z"
IF (D1= 0) AND (C1="") THAN E1 DISPLAY "Z"
IF (A1>5) THAN E1 DISPLAY "Z"


IF (D1< 0) AND (C1="") THAN E1 DISPLAY "X"
IF (C1<-1) AND (D1="") THAN E1 DISPLAY "X"

IF (D1> 0) AND (C1="") THAN E1 DISPLAY "Y"
IF (C1>2) AND (D1="") THAN E1 DISPLAY "Y"

Thanks for help