+comm -12 working/words.$1 working/british_variant_0.lst \
+ > working/british_variant_0-all.$1.pre
+
+comm -12 working/words.$1 working/british_variant_1.lst \
+ > working/british_variant_1-all.$1.pre
+
+comm -12 working/words.$1 working/canadian_variant_0.lst \
+ > working/canadian_variant_0-all.$1.pre
+
+comm -12 working/words.$1 working/canadian_variant_1.lst \
+ > working/canadian_variant_1-all.$1.pre
+