Frog: Hi, Miss. duck. Nice to meet you. 
Duck: Hello, Mr. frog. Nice to meet you, too. 
Frog: Look, it's rainbow. 
Duck: Oh! It's beautiful. How many colors can you see? 
Frog: I can see six colors. They are red, orange, yellow, green, blue and purple. 
Duck: What color do you like most? 
Frog: I like green most, because I am green. How about you? 
Duck: I like red most, because it can make you feel happy. 
Frog: look, what's that? 
Duck: That is waterfall. 
Frog: Wow! It's strange and beautiful.