(     )-13=4

(     )-6=10

(     )-11=3

(     )-3=15

(     )-4=10

(     )-0=17

(     )-12=0

(     )-8=10

(     )-10=5

(     )-5=11

(     )-9=4

(     )-12=0

(     )-5=9

(     )-1=18

(     )-15=3

(     )-0=11

(     )-1=13

(     )-10=3

(     )-5=10

(     )-9=11

(     )-12=4

(     )-13=4

(     )-0=12

(     )-9=7

(     )-8=6

(     )-17=2

(     )-17=3

(     )-10=10

(     )-0=12

(     )-1=12

(     )-5=14

(     )-8=6

(     )-7=5

(     )-4=8

(     )-17=0

(     )-3=9

(     )-15=1

(     )-6=14

(     )-7=7

(     )-4=16

(     )-2=12

(     )-1=11

(     )-14=4

(     )-11=8

(     )-1=18

(     )-14=4

(     )-1=14

(     )-7=10

(     )-5=10

(     )-3=14