4 a) Design a context free grammar for the following problems. Denote terminals with 5 small letters and non-terminals with capital letters. All possible palindromes (strings that read the same forvard or backward ) over the alphabet {a,b,c}. b) For each of the following Context Free Grammars (CFGs), indicate which of the 5 strings can be generated? Note: terminals are lowercase letters and non-terminals are uppercase letters. SABAbctBCABBCBeiou i. betot ii bewit iii. cattab iv. tettob