= 6. Find context free grammars for the following languages (a) L {abm : n, m > 0 and n # m} (b) L = {ab ck : n >m > 0 or m > k >0} (c) L = {a b ck : n+m > k >0} (d) L = {w e {a,b,c}* : Ny(w) = na(w) + nc(w)} = 6. Find context free grammars for the following languages (a) L {abm : n, m > 0 and n # m} (b) L = {ab ck : n >m > 0 or m > k >0} (c) L = {a b ck : n+m > k >0} (d) L = {w e {a,b,c}* : Ny(w) = na(w) + nc(w)}