Complete the following table:

+	−1	+3	−5	+7	−9
+1
−2
+3
−4
+5
−6

+	−1	+3	−5	+7	−9
+1	0	+4	−4	+8	−8
−2	−3	+1	−7	+5	−11
+3	+2	+6	−2	+10	−6
−4	−5	−1	−9	+3	−13
+5	+4	+8	0	+12	−4
−6	−7	−3	−11	+1	−15