lucas

https://play.golang.org/p/JTOih2Mf8GN

https://play.golang.org/p/vw81DB8wvIP

https://play.golang.org/p/NLLqbG1RVbE

https://play.golang.org/p/ZUZOa5FCmgl

https://play.golang.org/p/3bbMTf5UMZS

https://play.golang.org/p/wbRabpEQjzR

O meu ficou assim: https://play.golang.org/p/HmXH48bTjf-

https://play.golang.org/p/N18f47df_KF