Solve only the Questions indicated as HW3 -->{ab ) --> {ze} --> x [y] z BNF: --> --> ablab // 1 or more , HW3 Q1. how to convert it into 0 or more? --> ze --> XZ | Xyz Notes: 1) You can add additional rules. 2) You should use the "empty string" rule, i.e., : --> els which means, the abstract can be replaced with an empty string "e", or "s", where e="" is stands for empty. As an example, all of the following sentences belong to the rule above: 111 "SS" (empty string, where e = "") But, these sentences do not belong to: "e" "es" Solve only the Questions indicated as HW3 -->{ab ) --> {ze} --> x [y] z BNF: --> --> ablab // 1 or more , HW3 Q1. how to convert it into 0 or more? --> ze --> XZ | Xyz Notes: 1) You can add additional rules. 2) You should use the "empty string" rule, i.e., : --> els which means, the abstract can be replaced with an empty string "e", or "s", where e="" is stands for empty. As an example, all of the following sentences belong to the rule above: 111 "SS" (empty string, where e = "") But, these sentences do not belong to: "e" "es